The Agnes Gregson Collection consists of materials assembled by Gregson primarily documenting her student years at Oregon Agricultural College (OAC) in the late 1910s and early 1920s. The collection includes dance cards, decals, event programs, grade reports, greetings cards, letters, name tags, newspaper clippings, photographs, postcards, and ticket stubs. Materials reflecting Gregson's grade school and high school years in South Dakota and Salem, Oregon, are also included.
The photographs include portrait images and snapshots of Agnes and her family and friends; most of the images are unidentified. A tintype of an unidentified man is part of the collection. Photographs of Agnes with other OAC students are included as well as a 1971 group photograph of Agnes with other alumni at the 50th reunion of the Class of 1921. A list of reunion attendees is included with the photograph.