The Justice Department on Tuesday turned over more than 50,000 pages of records relating to the prosecution of Nazi criminals to the U.S. Holocaust Memorial Museum. In prepared remarks marking the event, Attorney General Michael Mukasey said the records amounted to the largest body of English-language primary source materials documenting Nazi prosecutions, outside of the immediate postwar Allied cases in Europe.

The records, many of which had not been public before Tuesday, include transcripts of more than 40 trials and hearings, and decisions rendered in cases brought by the Justice Department’s Office of Special Investigations, which for most of its 28-year history has been known simply as the DOJ’s Nazi-hunting unit.