The Allan D. Ainsworth papers (1956-2000) consist primarily of research materials related to the Act of June 18, 1934 (Indian Reorganization Act) in 1934. Series 1 contains photocopies of research materials, such as correspondence, articles, reports and maps, obtained by Ainsworth from libraries and archives. This research was presented as documents during the civil case in the United States District Court for the District of Arizona. This series also includes approximately 160 interviews conducted with Hopis about their recollection living in or near 1934. The culmination of these interviews resulted in a report and expert testimony for the Hopi Tribe.

Series 2 consists of materials related to federal recognition of the Cowlitz Tribe and Snoqualmie Indian Tribe and the denial of acknowledgment of the Miami Nation of Indiana.

Series 3 consists of Ainsworth's personal and professional materials. Included are photocopies of anthropology articles from various journals, writings, and school records.

Series 4 includes index cards maintained by Ainsworth when he assisted the Hopi Tribe in gathering evidence for boundary case. The index cards are organized alphabetically and by subject at the end.

Series 5 are duplicate microfilm reels from the United States. Bureau of Indian Affairs. Hopi Agency. The microfilm was given to Ainsworth from Fred Eggan, 1906-1991 in 1991. The microfilm did not play large part in the Act of June 18, 1934 (Indian Reorganization Act) case.

Series 6 are oversize maps printed by the United States Geological Survey related to areas in Arizona from 1969-1982.