The Special Collections at the University of Arizona Libraries has onsite and online collections, many of which are useful for genealogy and family history.

• Alexander Grayson Bowman Diary
• Arizona, Southwestern, and Borderlands Photograph Collection
• Documents Relating to San Juan de la Boquillas y Nogales Land Grant
• Historic Mexican & Mexican American Press
• Jack Sheaffer Photographic Collection
• Leo Goldschmidt Photographic Collection
• Morris K Udall — Joke Book
• Papers of the Oury Family
• Records of the Empire Ranch
• Report of an Exploration, Written at Mission Dolores, Pimeria A
• The “Tucsonians” Oral History Project Collection
• Up with People Archive
• American Vaudeville Museum Collection
• Arizona-Sonora Documents Online
• Financial Records of Tesoreria Nacional de Arispe
• Hohstadt Family Papers
• Jose Maria Arana
• Morales de Escárcega Collection
• Papers of Joseph Thomas McKinney
• Raul Castro Papers
• Records of the San Rafael Cattle Company
• Secretaria de Fomento, Colonizacion e Industria Records
• The Documented Border Collection
• University of Arizona Photograph Collection
• Arizona Index – index of all periodicals about Arizona, 1951-1990
• Comisionado de Mineria Records
• Harry Heffner Empire Ranch photograph collection
• Homer Shantz Photograph Collection
• Journal of Frank West
• Morris K Udall – Central Arizona Project
• Papers of Morris K. Udall
• Records of the Compania Constructora Richardson, S.A.
• Reminiscences about Empire Ranch
• Stewart L. Udall Papers
• The Morris K. Udall Oral History Project
• University of Arizona Yearbooks
• Arizona Geospatial Data and Maps and GIS Data

• Arizona & Southwest – Regional and local history 
• Borderlands
• University of Arizona
• Literature
• Performing Arts
• Political Affairs