Rosa Winkel publishing

Verlag rosa Winkel was a Berlin book publisher founded in 1975 as the first German-language publishing house of the postwar period devoted to gay literature. It took its name from the pink triangle that gay prisoners in Nazi concentration camps were forced to wear, a symbol reclaimed by the gay movement of the 1970s.

From the Wikipedia article “Rosa Winkel (publisher)”, licensed under CC BY-SA 4.0.

Rosa Winkel publishing is no longer an active publisher (defunct since 2005). Its books may still be in print through successor companies or available second-hand and in libraries.