The Háttér Society (1995) is one of the largest Hungarian LMBT+ organizations, and it has been active in many fields: advocacy, lobbying, legal aid, and the maintenance of an archive and library, AIDS/HIV prevention, mental help. The organization systematically collects various kinds of materials relating to LMTB+ issues (articles, scientific texts, literature, movies, even the foundational documents of the first Hungarian LMBT+ organization, Homérosz, etc.). Given the absence of an organization or institution dedicated to homosexual issues during the socialist era, most of the materials preserved are from private collections. At the same time, this is also the biggest obstacle the archive faces, because in recent decades many private collections vanished after the owners died. Frequently, the heirs are not able to accept that the deceased, who was often a family member, was homosexual, so the Háttér Society’s requests for materials have been regularly refused.