This series contains the records of the FBI obtained by Dan Siminoski as a consequence of his FOIA request dated October 22, 1982, and of the lawsuit filed on his behalf by the ACLU Foundation of Southern California on October 11, 1983, as well as materials created or collected by Siminoski in the course of analyzing these records. The records released by the FBI total approximately 2,200 documents, or 7,000 pages, from FBI Headquarters and various regional offices and relating primarily to the Daughters of Bilitis, Gay Activists Alliance, Gay Liberation Front, and the Mattachine Society. The analytical documents include a "Vaughn Index" to the documents, prepared by the FBI; document summaries, in several formats (typescript, manuscript, and on audio tape cassette); lists of documents and the "exemption codes" by which the FBI justified its redactions; document coding forms and instructions; and analytical and statistical notes compiled by Siminoski. The series is divided into two subseries: 1. Headquarters and Field Office Files, containing the files themselves, and 2. Document Analysis, containing Siminoski's analysis of the records, and related documents.