Phi Chi Theta is a business and economics fraternity that was founded on June 16, 1924 in Chicago, Illinois; the now inactive University of Oregon chapter was formed in 1962. The collection includes correspondence, minutes, office files and artifacts, 1976-1978

Sigma Xi was founded in 1886 (nationally) to honor excellence in scientific investigation and encourage a sense of companionship and cooperation among researchers in all fields of science and engineering. The Society of the Sigma Xi, University of Oregon Chapter, was founded in 1923 after a two year effort. Collection contains office files, correspondence, fraternity records, chapter book, and historical information.