Organizations like the DFK ( Deutscher Verband für Freikörperkultur ) may have historical records or digital libraries accessible to members or researchers. A Note on Modern Digital Safety

The FKK movement in Germany has roots going back to the late 19th century, but it saw a massive resurgence in the post-WWII era. Magazines like Jung und Frei were instrumental in this cultural shift. Unlike modern adult publications, these magazines were primarily focused on:

They provide a window into the social norms and "body positivity" movements of the mid-century.

If you are looking for digital copies of Jung und Frei , it is best to utilize legitimate historical archives rather than unofficial download sites, which often contain malware.