The Raul H. Castro Papers document his career in public service from his election as a Pima County judge in 1958 through three U.S. ambassadorships (El Salvador 1964-1968, Bolivia 1968-1969, and Argentina 1977-1980) as well as the governorship of Arizona (1974-1977).

The collection also contains material highlighting his education and sports activities at Arizona State Teacher's College (now Northern Arizona University), his legal education at the University of Arizona, his private law practice, his family life, and his personal and business interests