The papers of Frank S. Tavenner, Jr. include over 20,000 pages of Tavenner’s personal papers regarding the International Prosecution Section (IPS) of the IMTFE. Tavenner served as the Acting Chief Prosecutor while Joseph B. Keenan was in the United States and had a leading role in developing IPS arguments. This collection consists of Tavenner personal files (26 boxes) as well as his set of official IMTFE records (195 boxes), from 1945 to 1948.