Sonnenfreunde Sonderheft occupies a specific niche in the history of naturism and nudist publishing. Originating from the broader German-language naturist movement (Sonnenfreunde meaning “friends of the sun”), these Sonderhefte (“special issues”) served multiple roles: community-building organs, cultural documents, and platforms for naturist advocacy. This article summarizes the publication’s context, editorial character, cultural significance, and legacy.