About Us
ATO was the first fraternity founded after the Civil War in 1865.
ATO was the first fraternity founded as a national fraternity.
The first meeting of ATO was at 114 E. Clay St. in Richmond, Va., where Glazebrook read the Constitution of ATO to Marshall and Ross for the first time.
The first chapter north of the Mason-Dixon line, was chartered at the University of Pennsylvania 16 years after the founding of ATO, helping to bring a realization to the founders' dreams.
Thomas Arkle Clark in 1880, the ATO chapter at the University of the South (Sewanee) became the first of any fraternity in the South to have a chapter house.
ATO's first fraternity west of the Rockies and first of any fraternity in the Northwest was at Oregon State University in 1882.
Thomas Arkle Clark, the first initiate of the Gamma Zeta chapter at the University of Illinois at Urbana-Champaign, was the nation's first collegiate dean of men.
The first World War I Medal of Honor was given to Captain C. L. Irwin, Wyoming '13, as one of the first American heroes mentioned in dispatches to the U.S.
ATO was the first national fraternity to start a chapter free of alcohol and tobacco on fraternity property.
ATO was the first national fraternity to sponsor and conduct coeducational leadership conferences nationwide in 1992.
ATO was the first fraternity to implement a spiritual development program.
ATO was the first to develop and implement a member success initiative.
ATO founded the LeaderShape Institute in 1986, which is a prestigious leadership development program for college students across the United States.
