Fall 1906
Illinois Chapter organized as a club of 16 civil engineering juniors.

April 15, 1907
Incorporation papers granted by State of Illinois. Celebrated each year as Founders' Day.

April 8, 1909
Transit Club at Purdue University installed as Purdue Chapter. National Constitution and Ritual revised and a pledge oath and pin adopted.

December 9-11, 1909
First National Convention held at Champaign, Illinois.

February 2, 1911
On the day prior to the 2nd National Convention held in West Lafayette, Indiana, the Transit Club of Ohio State is installed as the Ohio State Chapter.

November 1911
First issue of TRIANGLE REVIEW, official magazine of the Fraternity, produced by W.A. Knapp ill asc.

February 7-8, 1913
4th National Convention at Champaign, Illinois, adopted national colors of old rose and gray. Ceremonial gavel presented to the Fraternity by W.A. Knapp ill asc. Civil Engineering Fraternity of the University of Wisconsin installed as Wisconsin Chapter.

October 31, 1920
Kentucky Engineering Fraternity installed at Lexington, Kentucky, as Kentucky Chapter.

January 1921
Adoption by national referendum of constitutional change permitting initiation of members from any branch of engineering.

March 3-5, 1921
12th National Convention held at Champaign, Illinois, adopted present form of membership certificate but without coat-of-arms.

August 6, 1921
CEM Fraternity at the University of Cincinnati installed as Cincinnati Chapter.

May 7, 1922
SRS Fraternity of the University of Iowa installed as Iowa Chapter at Iowa City, Iowa.

October 29, 1922
Chi Sigma Tau Fraternity at the University of Minnesota installed as Minnesota Chapter at Minneapolis.

May 26, 1923
Scroll and Triangle Club at Armour Institute of Technology (now Illinois Institute of Technology) installed as Armour Chapter at Chicago. Triangle Rattle, originated by Iowa Chapter, was presented for the first time to a 'baby' chapter.

October 25, 1924
AEP Club at University of Missouri installed as Missouri Chapter at Columbia, Missouri.

February 21, 1925
Quad L Club at University of Michigan installed as Michigan Chapter at Ann Arbor, Michigan.

April 30-May 2, 1925
First presentation of Service Key and Scholarship Cup at 16th National Convention in Cincinnati.

September, 1926
Triangle Song Book published.

January 8, 1927
Gamma Epsilon Fraternity of University of Kansas installed as Kansas Chapter at Lawrence, Kansas.

April 28-30, 1927
First Chapter Officers School held in conjunction with 18th National Convention at Chicago.

December 10, 1927
Grubstaker's Club at University of Missouri School of Mines and Metallurgy installed as Missouri Mines Chapter at Rolla, Missouri.

March 3, 1928
Sigma Epsilon Fraternity at Pennsylvania State College installed as Penn State Chapter at State College, Pennsylvania.

September 29-30, 1928
First copies of a new publication, A Syllabus on Pledge Training, distributed at Chapter Officers School.

May 1-3, 1930
21st National Convention adopted National Finance Plan providing lump sum payment by initiates to include life subscription to TRIANGLE REVIEW. The plan became effective the fall of 1931.

September 27, 1930
Phi Kappa Phi Fraternity at South Dakota School of Mines and Technology installed as South Dakota Mines Chapter at Rapid City, South Dakota.

April 28-30, 1932
Silver Anniversary Convention held at University of Illinois. Founders' Plaque dedicated in Illinois Chapter House. Prof. Daniel W. Mead wis hon, and Prof. Arthur N. Talbot ill hon made first National Honorary Members of Triangle. Alumni Relations Plaque awarded for first time, modified coat-of-arms approved, and Pledge Training Course adopted.

August 1932
First information booklet for use as a rushee prospectus published.

October 1932
First Chapter Officers Manual issued.

April 27-29, 1933
Charter of Missouri Chapter withdrawn by 24th National Convention at Chicago.

May 25, 1935
Kappa Phi Gamma Fraternity of Northwestern University installed as Northwestern Chapter at Evanston, Illinois

April 24, 1937
Gamma Theta Pi Fraternity of Marquette University installed as Marquette Chapter at Milwaukee.

August 30-September 3, 1937
25th National Convention held at Rapid City, South Dakota. Two constitutional amendments adopted: Permanent Fund created for monies other than operating funds and provision made for a Board of Trustees; sixth member added to Council and term of Council members set at two years, three members to be elected annually.

March 22, 1941
Pyramid Fraternity of University of Louisville installed as Louisville Chapter at Louisville, Kentucky.

April 18, 1942
CEM Fraternity of Cornell University installed as Cornell Chapter at Ithaca, New York.

1944
Triangle became a senior member of National Interfraternity Conference.

March 20-21, 1948
National Council suspended Iowa Chapter indefinitely at own request to avoid building up National Alumni Fee debt.

September 2-5, 1948
Past President Charles Rex Little pur23 became Triangle's first Executive Secretary at 35th National Convention in Madison, Wisconsin. Convention adopted short form of initiation for alumni distant from any chapter.

January 29, 1950
Herbert F. Scobie minn32 appointed Executive Secretary following death of Brother Little on January 8, 1950.

September 6-8, 1950
38th National Convention in Columbus, Ohio, conferred National Honorary Membership upon Lt. Gen. John R. Hodge ill16, reduced the size of Council to five men effective with the 1953 Convention, and liberalized Permanent Fund investment restrictions.

September 10-13, 1952
39th National Convention in Chicago conferred National Honorary Membership upon Dr. Ovid W. Eshbach nu hon, Dean of the Technological Institute, Northwestern University.

August 31-September 3, 1954
41st National Convention in St. Louis voted to hold biennial National Conventions after 1955, with regional meetings in the even numbered years starting in 1956. Terms of Council were extended to four years with election of national officers by Council instead of Convention. William R. Brown os33 was appointed Executive Secretary to succeed Herbert F. Scobie minn32.

January 8, 1955
Triangle Club of Michigan State College installed as Michigan State Chapter at East Lansing, Michigan.

June 1, 1955
Affirmative vote of chapters adopting nonjewelled badge as one of several official badges was announced.

August 30-September 2, 1955
42nd National Convention at State College, Pennsylvania, adopted white chrysanthemum as official flower, and voted to pay travel expenses of two active organization delegates to Convention and to require minimum grade of C or equivalent for pledging and initiation.

August 28-31, 1957
Triangle Golden Anniversary Convention held at Urbana, Illinois, with ten Founders and 11 past presidents in attendance. Dr. David B. Steinman, master bridge builder, made a National Honorary Member.

November 16, 1957
Triangle Colony of Clarkson College of Technology installed as Clarkson Chapter at Potsdam, New York.

December 7, 1957
Triangle Club of University of California at Los Angeles was installed as UCLA Chapter.

July 12-13, 1958
Building Loan Fund established to help finance chapter house building and remodeling; Board of Trustees appointed by National Council. The Fund had been discussed at several Conventions and was approved at the 1957 Convention along with an increase in National Active Fee to help provide funds.

September 2-5, 1959
Solomon C. Hollister cor hon, dean emeritus of College of Engineering, Cornell University, elected a National Honorary Member at 44th National Convention in Ithaca, N.Y.

April 24, 1960
Nationwide, simultaneous Founders' Day celebrations coordinated by Alumni Relations Committee of National Council.

July 9-10, 1960
Upon recommendation of Advisory Committee of Past Presidents, National Council adopted plan providing for 16 regions (changed to 19 in 1963) to be supervised by directors living in each region.

April 15, 1961
54th anniversary of Founders' Day celebration with record breaking conference telephone call. More than 2000 members and guests in 21 cities from coast to coast participated in 24-hour Triangle Telephone Network. Frederick R. Kappel minn23, AT&T board chairman, was keynote speaker and first recipient of Triangle Citation, awarded over telephone. Sigma Delta Omega, local fraternity at University of Wisconsin in Milwaukee, became branch of Wisconsin Chapter.

August 30-September 2, 1961
National Convention in Milwaukee provided for Fraternity's first full-time executive director, voted to admit approved chemistry, physics, and mathematics majors to membership, and established a $10.00 National Pledge Fee. Prof. Benjamin G. Elliot wis hon elected to National Honorary Membership.

April 14, 1962
Second Triangle Telephone Network on 55th anniversary of Founders' Day had Maynard P. Venema ar29, board chairman of Universal Oil Products Co., as keynote speaker. He received Triangle Citation. Herbert F. Scobie minn32, former Executive Secretary and REVIEW editor, introduced as Triangle's first full time staff member, to take office as Executive Director July 1, 1962.

July 6-8, 1962
Council adopted 5-year plan of development and financial stabilization proposed by Past President Frank Caplan cor42. Features included installation of chapter a year for five years, growth of existing chapters to a minimum of 40 actives, and establishment of Triangle Exponents who pay $10.00 a year to promote growth of Triangle.

November 3, 1962-January 19, 1963
Regional Chapter Administration Forums held at Northwestern, Cornell, Purdue, Nebraska, and Cincinnati Chapters to explain 5-year program and equalization of active organization Convention travel expense in place of subsidy.

March 16, 1963
Nebraska Colony of University of Nebraska installed as Nebraska Chapter at Lincoln, Nebraska.

August 26-29, 1963
46th National Convention held in Excelsior Springs, Missouri. Primary attention given to broad, new program of alumni relations and to extension. Prof. Emeritus Herbert R. Hanley mom hon elected to National Honorary Membership.

April 25, 1964
Iowa State Chapter installed at Iowa State University, Ames, Iowa.

September 2-5, 1964
47th National Convention held in Champaign, Illinois. Founder Arthur Schwerin ill07 received letters from all living past presidents and a citation designating him "Mr. Triangle." Dr. William L. Everitt ill hon, Dean of Engineering, University of Illinois, elected a National Honorary Member.

September 7, 1964
Kansas State Chapter installed at Kansas State University, Manhattan, Kansas.

November 21, 1964
Oklahoma State Chapter installed at Oklahoma State University, Stillwater, Oklahoma. Ten thousandth initiate of Triangle among those installed. To commemorate event, a resolution hailing Triangle's Second Ten Thousand was adopted by National Council and presented to the new chapter. Copies were sent to all chapters.

January 23, 1965
MSOE Chapter at Milwaukee School of Engineering installed at Milwaukee.

September 28, 1965
An optional lump sum prepayment of estimated national active fees in return for a prepayment premium was offered to active organizations for the first time. Several years later this was extended to include prepayment of estimated pledge fees and initiation fees.

November 25-28, 1965
48th National Convention held in Cincinnati. TEAM Program proposed by National President Eugene J. Rezabeck ar47 adopted. John R. Adriansen marq41, Permanent Fund Chairman and past national president, received Triangle Service Key.

November 24-27, 1966
49th National Convention held in Chicago. William L. Swihart pur45 became first immediate past president not serving regular term to be ex officio member of Council. John W. Mercer os24, past national president, received Triangle Service Key. Student Loan Fund renamed Memorial Loan Fund in memory of Colorado State University Colony members killed in plane crash on way to Convention.

February 4, 1967
Rochester Institute of Technology Chapter installed. David H. Bulman cl54cor, past national vice president, received first Certificate of Service.

May 27, 1967
Colorado State University Chapter installed at Ft. Collins.

November 24-26, 1967
50th National Convention held in Minneapolis. Ikel C. Benson minn25, past national president, received Triangle Service Key. Frederick R. Kappel minn23, AT&T board chairman, was principal speaker.

January 22, 1968
First of a series of how-to-do-it sheets providing ready answers to frequently asked questions were distributed to undergraduate officers.

May 4, 1968
Rose Tech Chapter installed at Rose-Hulman Institute of Technology, Terre Haute, Indiana.

July 2, 1968
Branch of Michigan Chapter started on Dearborn Campus of the University of Michigan.

November 29-December 1, 1968
51st National Convention held in Columbus, Ohio. Frank Caplan cor42, past national president, received Triangle Service Key. Membership voting procedures were liberalized by making it possible for a chapter, through provision in its constitution, to vote by any procedure and to allow any number of unfavorable votes if forced by local campus regulations to deviate from national Triangle procedures.

February 15, 1969
First meeting of Nominating Committee held under new procedure for electing a 10-man Council. Meeting held in anticipation of subsequent approval by mail of proposal to provide for random rotation of Council posts among all chapters and for 3-year succession as vice president, president, and immediate past president.

April 26, 1969
Colorado Chapter installed at the University of Colorado, Boulder, Colorado.

August 27-30, 1969
Triangle returned to summer Conventions, and held its first national meeting outside the United States when the 52nd National Convention was held in Windsor, Ontario, Canada. Engraved gold membership card and leather bound book of letters of appreciation presented to Edward Larson cin22, past national president and chairman of the Triangle Building Loan Fund from its establishment in 1957. Convention adopted resolutions condemning use of narcotics of all types, psychedelic drugs, and alcohol as an escape from the challenges of life. First trustees of the Triangle Fraternity Education Foundation were appointed with Past National President Howard H. Darbo wis29 as president, making him the first man to serve on the Permanent Fund, the Building Loan Fund, and the Foundation.

February 1970
Founders Fund, an all-out attempt to eliminate Triangle's deficit and establish permanent financial stability, was inaugurated through the Winter 1970 issue of TRIANGLE REVIEW.

April 4, 1970
Pittsburgh Chapter installed at the University of Pittsburgh, Pittsburgh, Pennsylvania.

April 11, 1970
UWM Chapter installed at the University of Wisconsin, Milwaukee, Wisconsin.

September 2-5, 1970
Triangle's westernmost national meeting was the 53rd National Convention held in Boulder, Colorado. It was dedicated to the three remaining Founders and the author of the Ritual, respectively, Thomas G. Lowry ill07, NSN 9, Arthur Schwerin ill07, NSN 11, R. Osgood Harder ill07, NSN 13, and Harry H. Burgess ill08, NSN 30. All were present and active in Convention affairs. Clarkson Chapter was expelled for refusing to adhere to course-of-study membership requirements. Voluntary alumni dues of $10.00 were established. Permanent Fund income was transferred, effective January 1, 1970, to the Building Loan Fund to avoid taxation under the Tax Reform Act of 1969. The first Publications Awards for chapter letter excellence were awarded.

December 11, 1970
First 48 typewritten pages of Triangle History prepared by John Merrill Weed os21, past national president and chairman of the History Committee, distributed to History Committee members.

April 1971
First Membership Mailing soliciting national alumni dues and contributions made.

May 22, 1971
Toledo Chapter installed at the University of Toledo, Toledo, Ohio.

September 2-4, 1971
54th National Convention held in Waukegan, Illinois. Michigan Chapter suspended at its own request in anticipation of closing down and selling its chapter house. Proceeds of sale were invested in Triangle Building Loan Fund debentures with instructions from Michigan Chapter board to turn debenture interest over to the Triangle Fraternity Education Foundation. John J. Bresee ill19, long-time vice chairman of Building Loan Fund, received the Triangle Service Key.

July 1, 1972
The Founders Fund was discontinued by transferring part of it to the Education Foundation and the balance to the General Reserve to eliminate confusion with National Voluntary Alumni dues and Exponents solicitations.

August 3-5, 1972
55th National Convention held in Waukegan, Illinois, had superimposed on it a 2-day Constitutional Convention with separate delegates to meet, with past National President Robert C. Deen ky48 presiding, to consider a restructured National Constitution, Bylaws, and Ritual prepared by Brother Deen. Howard H. Darbo wis29, past national president and president of the Foundation, received the Service Key. Colorado Chapter was suspended at its request. Based on a survey of the membership in the spring and the recommendation of the special Convention Committee on Membership Requirements, Convention voted not to change existing course-of-study membership requirements, but a course-of-study survey was called for. An Undergraduate Convention Reserve was authorized to provide, effective with the 1973 Convention, for partial financing of undergraduate attendance, and the national initiation fee for associate and honorary members was reduced to encourage chapters to initiate more such members. W.H. Krack pur33 was appointed field director, first in many years.

September 1972
Name of Triangle Newsletter, issued for decades to local, regional, and national officers, was changed to The Exponent of Triangle.

November 11, 1972
Mississippi State Chapter installed at Mississippi State University.

December 1, 1972
Three new promotional folders--Membership Prospectus, Education Foundation, and Building Loan Fund--were released to the membership. Membership Prospectus was the first of four pieces made available to undergraduates at no extra charge to aid in membership promotion. Additional pieces issued early in 1973 were The Objectives of Triangle, Triangle Code of Ethics, and Triangle Means Opportunity.

July 1, 1973
Herbert F. Scobie minn32 assumed editorship of TRIANGLE REVIEW for the third time, effective with the Summer 1973 issue.

August 7, 1973
First Rules & Regulations authorized by the 1972 Convention to supplement the restructured Constitution and Bylaws and prepared by Councilman Randall E. Drew rose67 were adopted by Council.

August 9-11, 1973
56th National Convention held in Waukegan, Illinois. Leadership School was expanded to seven sessions. Council was given authority to approve annual budgets, and biennial Conventions were authorized to be held in odd years, the next in 1975. John Merrill Weed os2l, past national president and author of Triangle History, received the Service Key. Harold B. Gotaas nu hon, former dean of Northwestern Technological Institute, and John T. Rettaliata ar hon, former president, Illinois Institute of Technology, became National Honorary Members.

July 31-August 3, 1974
First Leadership School not associated with a Convention held in Columbus, Ohio.

August 2, 1974
1974 National Banquet held in Columbus, Ohio, the first not held as part of a National Convention. Norman J. Bukey cin24, long-time Approved Courses chairman, received the Triangle Service Key.

September 1, 1974
Dr. Ralph G. Nevins, former dean of engineering, Kansas State University, received National Honorary Membership at the 10th anniversary celebration of the Kansas State Chapter.

September 1974
New editions of Undergraduate Officers Manual (formerly Chapter Officers Manual), Member Manual (formerly Pledge Manual), Chapter Advisers Manual, Rushing Manual, and Public Relations Manual issued. "Triangle Preview", a slide presentation prepared by Field Director W. H. Krack pur33, was distributed for rushing and extension.

August 14-16, 1975
57th National Convention, combined with traditional Leadership School sessions, held in Rolla, Missouri. National Active Fee was put on a term, rather than monthly, basis and all undergraduate fees were raised to offset inflation and to eliminate deficit spending. A new official jeweler was selected, and National Office was instructed to stock the most popular official badges. Michigan Active Organization suspension, imposed by the 1971 Convention at Michigan Chapter request, was lifted. Ted B. Jefferson kan30, chairman, Building Loan Fund, received the Triangle Service Key. Accounting Manual, compiled and edited by Past President Richard H. Sudheimer minn52, was distributed.

October 11, 1975
Dr. A. A. Potter pur hon, dean emeritus, Purdue University, received National Honorary Membership at the Purdue Chapter annual meeting.

November 23, 1975
Ralph C. Lenz, Jr., aeronautical consultant and international authority on technological forecasting, received National Honorary Membership at a banquet at Wright-Patterson Air Force Base.

Early 1976
Triangle directory records, for nearly 20 years handled by Addressograph equipment, were computerized.

August 14, 1976
The one-day 1976 National Meeting, without Leadership School or legislative sessions, was held in Pittsburgh, Pennsylvania. Preceding the Annual Banquet, the first technical session, subsequently called the Foundation Seminar, featuring two outstanding Triangle speakers, was sponsored by the Triangle Fraternity Education Foundation.

August 18-20, 1977
The 58th National Convention at West Lafayette, Indiana, was dedicated to the only living Founder, Rubey Osgood Harder ill07. The three day meeting combined legislative sessions, Leadership School sessions at which the Member Development Manual was introduced, a joint viewing of "Fraternity Row" with the Alpha Sigma Phi Leadership Conference, the Foundation Seminar, and the Annual Banquet. W. H. Krack pur33, long-time field director who had made service to Triangle his hobby, received the Triangle Service Key.

Fall 1977
Dr. John A. Logan rose hon received his certificate of National Honorary Membership at the Rose Tech Chapter Homecoming celebration.

May 1, 1978
Charles S. Barbour ps43 became Executive Director, succeeding Herbert F. Scobie minn32, who retired after 16 years of service. The National Office was moved from Evanston, Illinois to Toledo, Ohio, on May 20.

August 17-19, 1978
The 1978 National Meeting, held in Lawrence, Kansas, featured Leadership School based on the story of problems of the mythical Mid-Central Chapter.

March 1979
Triangle History, a 325-page work of the Triangle History Committee headed by Past President John Merrill Weed os2l, was reproduced and distributed to each chapter for its library.

August 16-18, 1979
The 59th National Convention was held on the campus of the University of Wisconsin-Milwaukee. Richard S. Sudheimer minn52, past national president 1974-75 and past president of the National Interfraternity Conference 1977-78, received the Triangle Service Key.

November 18, 1979
Oklahoma Chapter installed at the University of Oklahoma in Norman.

April 19, 1980
VPI Chapter installed at the Virginia Polytechnic Institute and State University in Blacksburg.

August 15-16, 1980
The 1980 National Meeting was held on the campus of The University of Toledo. Leadership School included short presentations of current fraternity problems with opportunity for feedback and discussion.

August 13-15, 1981
The 60th National Convention was held on the north campus of the University of Michigan. Leadership School featured a theme of Member Development. Robert M. Hamlett ks61ar was awarded the Triangle Service Key. Undergraduate fees were increased and Bylaws changed to provide for voluntary withdrawal of membership. Bylaws were amended to replace Regional Directors with National Council representatives. These NCRs are assigned to specific chapters, while National Service Volunteers perform a variety of duties.

January, 1982
The 75th Anniversary Alumni Directory was published.

March 27, 1982
Connecticut Chapter installed at the University of Connecticut in Storrs.

August 13-15, 1982
The 75th Anniversary of Triangle observed at the 1982 National Meeting at the University of Illinois at Champaign-Urbana. Robert J. Mosborg ill45, past national president, received the Triangle Service Key.

August 29, 1982
R. Osgood Harder ill07, the last living founder of Triangle Fraternity, entered chapter eternal at age 96.

January 22, 1983
Computer science joined chemistry, physics and mathematics as an approved science following a referendum vote of the chapters. Biological science failed approval by a narrow margin.

August 10, 1983
Council suspended the undergraduate organization of the Kentucky Chapter at the request of the chapter board and permitted the alumni board to retain the charter pending reestablishment of an undergraduate organization.

August 11-13, 1983
At the 1983 National Convention in Cincinnati, Ohio, Jay S. Hammond ps41, who served two terms as governor of Alaska, received the Triangle Citation. Robert C. Deen ky48 received the Triangle Service Key. Convention took a strong stand against hazing. Alfred H. Samborn became a National Honorary. Council laid the groundwork for the Scobie Fund which Foundation subsequently ratified.

August 10-12, 1984
Kansas and Iowa State Chapters won the first Community Service Awards sponsored by Triangle Fraternity Education Foundation at the National Meeting in Ames, Iowa.

1985
The Cornell chapter is suspended by National Council.

August 15-17, 1985
62nd National Convention at Columbus, Ohio. Eugene J. Rezabeck ar47 received the Triangle Service Key. National Council selected H. Jack Sargent pur55 as Executive Director, succeeding Charles S. Barbour ps43.

1986
Triangle National Office moved from Toledo to South Bend, Indiana.

August 14-16, 1986
National Meeting in St. Louis, Missouri. Risk Management and Liability Insurance were topics of discussion.

September 27, 1986
University of Texas, Arlington Chapter installed at Arlington, Texas.

January 24, 1987
The Northwestern Chapter was suspended at its own request.

August 13-15, 1987
National Convention held at University of Wisconsin, Milwaukee. Triangle Service Key was presented to Robert B. Rosenberg ar55. Discussions on risk management issues involving alcohol, drugs and sex misconduct were held. The Mississippi State Chapter was suspended at its own request.

April 9, 1988
Texas A&M Chapter installed at Texas A&M University at College Station.

April 16, 1988
Michigan Tech Chapter installed at Michigan Technological University at Houghton.

August 21-23, 1988
National Meeting and Leadership School held in Lincoln, Nebraska. Substance Abuse was main topic of discussion.

April 15, 1989
Nu Pi fraternity installed at Tri-State University as the Tri-State Chapter of Triangle in Angola, Indiana.

August 20-23, 1989
64th National Convention held in Ft. Collins, Colorado. Legislation changing Bylaws concerning Pledge Education was enacted.

August 12-14, 1990
Leadership School and National Meeting were held in Cincinnati, Ohio. Risk Management was the main topic of discussion. Charles Barbour ps43 is awarded the Triangle Service Key for his service as Executive Director to the Fraternity and the Education Foundation.

October 20, 1990
H. Jack Sargent pur55 submits his resignation as Executive Director in order to return to private practice in civil engineering. National Councilman Merle Newlon lou73 is appointed by National Council to serve as interim Executive Director.

March 10, 1991
Triangle's membership reaches 20,000 initiates. Matthew Lawrence Stamm rose91 is initiated as member number 20,000.

April 20, 1991
National Council meets in South Bend, Indiana to interview candidates for the Executive Director position. Robert M. Hamlett ks6lar is selected. National Council also announces the relocation of the National Office to Indianapolis, Indiana.

August 11-14, 1991
65th National Convention is held in Washington, D.C. Changes in the Risk Management Policy (Fraternity Order 3.6) and National Bylaws are adopted. Executive Director Robert M. Hamlett ks6lar announces that Merle Newlon lou73 has been asked to stay with the National Office staff and serve as Associate Executive Director. Triangle Service Keys are awarded to Merle Newlon lou73 and Chauncey 'Al' Fahey wis48 for their work and service to the Fraternity.

September 5, 1991
The National Office is relocated to 8777 Purdue Rd., Suite 235 in Indianapolis.

November 2, 1991
The colony at the University of Akron installed as the Akron Chapter in Akron, Ohio.

August 8-11, 1992
Leadership School is held at South Dakota School of Mines and Technology in Rapid City, South Dakota. Participants recognized five elements that made Triangle unique: brotherhood, scholarship and academic support, technical focus, profession, and the opportunity for personal growth and social development.

April 30, 1993
The Triangle Internet Mailing List is created, allowing instantaneous communication between Triangle brothers around the world.

August 14-17,1993
At the 66th National Convention in Indianapolis, the requirements for approved courses of study were standardized and simplified.

October 9, 1993
Triangle colony at Northern Illinois University is installed as the NIU Chapter in DeKalb, Illinois.

March 6, 1994
Triangle becomes one of the first fraternities on the World Wide Web with the creation of the Triangle Fraternity Home Page.

April 16, 1994
Past National President Robert D. Hoel ar67 awarded the Triangle Service Key at the Armour Chapter's Founders' Day banquet.

August 6-9, 1994
At Leadership School in Madison, Wisconsin, the School is renamed the "Herbert F. Scobie Leadership School" to honor Triangle's long-time Executive Director and Editor.

February 1995
The Triangle Wall of Fame is created. The first four members are Frederick R. Kappel minn23, Ellison S. Onizuka colo69, Henry J. Ramey, Jr. pur48, and Gerald A. Rauenhorst marq50.

August 1995
National Council suspends the Oklahoma State active organization due to the chapter's failure to meet Triangle's Minimum Standards Requirements.

August 1995
Albert J. Evon ar88 joins the National Office staff as Director of Chapter Services.

August 5-8, 1995
National Convention is held in Overland Park, Kansas. A major rewrite of the National Constitution and Bylaws is completed. Past National Presidents Gerald Jakubowski tol74, Randy Kerns mom71, and James Marshall pur65 receive Triangle Service Keys.

October 1995
National Council suspends the Michigan active organization due to violations of the Triangle Risk Management Policy.

February 1996
National Council suspends the VPI active organization at the chapter's request.

August 3-6, 1996
James John tol77ch becomes a National Honorary Member during the Herbert F. Scobie Leadership School, held in West Lafayette, Indiana.

October 1996
Robert M. Hamlett ks6lar steps down as Executive Director. National Council appoints Director of Chapter Services Albert J. Evon ar88 as Interim Executive Director. Council later makes the appointment permanent.

February 1, 1997
National Council suspends the Akron Chapter due to the chapter's failure to meet Minimum Size Standards and outstanding debt owed to National Council.

July 26, 1997
Park W. Gast, Jr. cin49 awarded the Triangle Service Key.

August 9-12, 1997
The National Convention in Minneapolis, Minnesota, features a museum of Triangle artifacts and history. A ritual team consisting of members from seven different chapters initiates a new member from the Marquette chapter.

August 27, 1997
Triangle moves into a new National Headquarters, located in Plainfield, Indiana.

August 1-4, 1998
Herbert F. Scobie Leadership School is held in Chicago, Illinois, on the campus of the Illinois Institute of Technology. Leonard J. Staab marq50 is posthumously awarded the Order of the Transit.

December 31, 1998
National Council suspends the Active Organization of the Connecticut Chapter at the request of the chapter board.

February 27, 1999
National Council suspends the Active Organization of the Texas A&M Chapter due to its small size and large debt to the National Organization.

August 7-10, 1999
At National Convention in Orlando, Florida, Richard F. Beaubien mich64 is awarded the Triangle Service Key and Herman Schneider cinhon is made a National Honorary member. The Graduation Ceremony is adopted as a companion to the Triangle Ritual and is performed for the members in attendance.

January 14-16, 2000
At the first annual President's Academy in Plainfield, Indiana, twenty-five chapter presidents gather to discuss leadership in Triangle.

August 5-8, 2000
Herbert F. Scobie Leadership School is held in Ames, Iowa, on the campus of Iowa State University. The program includes two service projects for local community organizations. Al Evon steps down as Executive Director.

September 5, 2000
Paul Lawson starts work as Triangle's new Executive Director.

October 22, 2000
National Council suspends the UTA chapter at the chapter's request.

January 18, 2001
National Council suspends the Active Organization of the Pitt Chapter at the chapter's request.

August 3-5, 2001
At National Convention in St. Louis, Missouri, attendees define Triangle's purpose. A demonstration of the Ritual is followed by an indepth discussion of both logistics and symbolism.

August 8-11, 2002
Triangle's 2002 Leadership School, held at Camp Tecumseh in Brookston, Indiana, provides recently initiated members with an intensive living-learning experience using educational programs scheduled throughout the day and evening.

July 26, 2003
Triangle Service Key awarded to Arthur C. Moeller marq49, Professor Emeritus from Marquette University, in appreciation of his many years of service to Triangle Fraternity and the Education Foundation's Loan and Scholarship program.

July 31-August 3, 2003
At Triangle's 71st National Convention, held in Louisville, Kentucky, delegates vote to prohibit little sister organizations at chapters. Kevin Y. Fong ucla84 is presented with the Triangle Service Key.

October 19, 2003
The Order of the Transit is presented to Robert Patten ar01 in recognition of his 25 years of service to the Armour Chapter.

January 16-18, 2004
More than seventy Triangle members gather in St. Paul, Indiana, for the Triangle Education and Training Weekend, consisting of the President's Leadership Academy, Leadership Advantage Conference, and Recruitment Training Conference.

July 29-31, 2004
Bloomington, Indiana, hosts Triangle's 2004 Leadership School. The program targets the emerging leaders of the fraternity's chapters.

March 15, 2005
The Cincinnati Active Organization is suspended at the chapter's request.

June 4, 2005
Triangle installs the UMBC Chapter at the University of Maryland, Baltimore County.

July 28-30, 2005
Triangle's 2005 National Convention is held in Lisle, Illinois, in conjunction with the annual convention of Phi Sigma Rho, a national social sorority for women in engineering and engineering technology. Triangle delegates adopted a non-discrimination policy for the organization, set a minimum GPA for men to be pledged into Triangle, and modified the guidelines for approved courses of study to allow the consideration of curricula that do not neatly fit into engineering, architecture, or science.

November 12, 2005
The Kentucky Chapter is rechartered following a successful expansion effort.

January 14, 2006
Triangle's annual Presidents' Leadership Academy is named after Steven L. Miller ill64.

February 26, 2006
George Griffin ok78 is presented with the Order of the Transit in recognition of his service to the Oklahoma Chapter.

July 27-29, 2006
Triangle's Centennial Celebration kicks off at Herbert F. Scobie Leadership School, held in Champaign, Illinois.

August 1, 2006
Brian Tenclinger takes office as Triangle's Executive Director.

November 9, 2006
Following requests from the chapters' alumni organizations, National Council votes to suspend the Colorado State and Michigan Tech active organizations.

January 27, 2007
The Michigan Chapter is rechartered following a successful expansion effort.

July 12-14, 2007
Triangle's Centennial Convention takes place in Indianapolis, Indiana. Highlights include the dedication of the new front courtyard at the National Headquarters, joint events with Phi Sigma Rho Sorority, a career fair, and a black-tie centennial celebration dinner. The Men of the Century, a group of brothers recognized for outstanding achievement and service, is recognized. Randy Drew rose67 is presented with the Service Key.

September 15, 2007
The Texas A&M Chapter is rechartered following a successful expansion effort.

November 10, 2007
The Pitt Chapter is rechartered following a successful expansion effort.

April 6, 2008
The NIU Active Organization is suspended at the request of the chapter's alumni board.

April 19, 2008
The Houston Chapter is installed at the University of Houston.