Materials include correspondence, financial records, general meeting minutes, committee records, membership rosters, newspaper clippings, newsletters, and movie reels.

The collections consists of a curriculum vitae, syllibi, and lecture notes.

The papers consist mostly of banding returns and Purple Finch studies. They also include several photographs and an extensive card file documenting bird sightings from 1948 to 1972. Photographs 1-4 are of Ruth Thomas, c. 1920-1960. Photograph 5 is of a Ruth Thomas book signing. Photographs 6-15 are of Ruth Thomas and various birds taken at her home in Morrilton, Arkansas, in 1970. The card file has been preserved in its original arrangement.