Nazi book burnings
The books of the Institut für Sexualwissenschaft were destroyed during the Nazi book burnings, and the institute destroyed. Under the terms of the Magnus Hirschfeld Foundation, the government had agreed to continue the work of the institute at the university after its founder's death. However, these terms were ignored. In 2001, the university acquired the Archive for Sexology from the Robert Koch Institute, which was founded with a large private library donated by Erwin J. Haeberle. This has now been housed at the new Magnus Hirschfeld Center.