With this contribution, we draw attention to the rediscovery of a part of Schönlein's manuscripts which were thought to have been destroyed during World War II, with particular focus on the German-Jewish physician and medical historian Erich Ebstein (1880-1931) and his achievements in researching Schönlein. This is a first attempt at determining the value of Ebstein's literary estate for subsequent research on Schönlein. Furthermore, several current projects concerning Schönlein are presented.