Source of acquisition is the Central Archives for the History of the Jewish People (CAHJP) (Arkhiyon ha-merkazi le-toldot ha-ʻam ha-Yehudi), Signature: P 174. The original collection was acquired by the CAHJP in January 1982 from the Central British Fund, London. The United States Holocaust Memorial Museum Archives received this collection via the United States Holocaust Museum International Archives Project in March 2016.