This series consists of materials Latham collected throughout the course of his research. The series contains a lot of information on homosexuality in general, and on homosexuals in heterosexual marriages in particular, one of the major focuses of Latham's research. The series also contains extensive information on treatment programs and services for alcoholics, another major focus of Latham's research. The bulk of the series consists of published scholarly articles, and unpublished student papers not written by Latham. Some of the other materials include newspaper and magazine clippings, newsletters, pamphlets, project proposals, and reports. The series includes extensive bibliographic information, and surveys that Latham referred to in writing the surveys for his own research studies. The series also includes some of Latham's hand written research notes as well as his class notes from California State University, Fullerton.