The "Library of Lost Books" is a multilingual online exhibition and citizen science project commemorating the community of scholars, students, and staff of the Higher Institute for Jewish Studies Berlin (1872-1942), and their contribution to Jewish culture and science before the Institute’s destruction in 1942. The project highlights the cultural losses and injustices caused by the Nazis, with particular focus on the Institute’s 60,000 books that are now scattered all-over the world. The joint initiative of the Leo Baeck Institutes in Jerusalem and London aims at involving the public as 'book detectives', with a particular focus on winning students and pupils to do provenance research at libraries and archives in Israel, the UK, Germany, the Czech Republic, and the USA.

The Leo Baeck Institute – New York | Berlin is a research library and archive focused on the history of German-speaking Jews. Its extensive library, archival, and art collections comprise one of the most significant repositories of primary source material and scholarship on the centuries of Jewish life in Central Europe before the Holocaust.