This collection consists of various correspondence, photographs, short handwritten manuscripts, and oral history communications with transcripts describing Ava Johnson's life, and work as a women cattle ranger in Texas.

The collection was compiled by Cynthia Ott, who interviewed Ava Johnson Cox with the intent of publishing a history of early 20th-century life in what is known as the Hill Country of Texas (highlighting Blanco, Gillespie, and Hays counties).