The Edwin C. Cotton Photographs and Clippings were compiled by Cotton and contain photographs, mainly of Field Days, and newspaper clippings, especially concerning Dr. Herbert Osborn who was a professor of zoology and entomology at Ohio State University.

The Pi Alpha Xi, Epsilon Chapter Records contain correspondence, minutes, national constitutions, by-laws, and other administrative records of the organization. An annual report and newsletter of the National Council for Therapy and Rehabilitation through Horticulture are also included. The collection material dates from 1929 to 1989.