Dr. Hendricks was a well-respected man on the State Teachers College - Warrensburg campus, serving as president of the Warrensburg institution from 1915 until his retirement in 1937. He began his service as head of the History Department in 1910. He was one of the foremost members of the American Association of Teachers Colleges and was an active champion of progressive policies for the professional education of teachers. In addition to his involvement with the establishment of Phi Sigma Pi, he was also instrumental in founding the Alpha Chapter of Sigma Tau Gamma, a national social fraternity chartered at Warrensburg in 1920.

Dr. Phillips served for many years as the dean of faculty at the Warrensburg Institution. Dr. Phillips spent a total of eighteen years at Warrensburg before becoming the director of the University Elementary School at the University of Missouri. His lectures and writings on various phases of elementary education made him well-known throughout the country as he served as the chairman for the University of Missouri Committee on Accredited Schools and Colleges from 1926 to 1949. Dr. Phillips wrote several books on education, including Adventuring in Young America, and Building Our Country, both published in 1929.

Dr. McClure served Warrensburg for eighteen years, thirteen of which were as head of the History Department. In 1928, McClure accepted a teaching position at the State Teachers College, Kirksville, Missouri, now known as Truman State University, where he worked to form the Beta chapter of Phi Sigma Pi in 1929. Dr. McClure had several books published, including The Story of Ancient Times in 1937, and A World Background for the United States in 1946.

In addition to Dr. Hendricks, Dr. Phillips and Dr. McClure, ten other students were part of the founding group in 1916. They signed the rollbook in the following order: Alfred Thayer, J. Archie Leach, Roland Grinstead, Ray Parkins, Wade Fowler, Roy Bigelow, Arthur Kresse, John Doak, Harold Patterson and Harry Hill.