Forms part of the Claims Conference International Holocaust Documentation Archive at the United States Holocaust Memorial Museum. This archive consists of documentation whose reproduction and/or acquisition was made possible with funding from the Conference on Jewish Material Claims Against Germany. From the Żydowski Instytut Historyczny im. Emanuela Ringelbluma (ŻIH), Sygn. 303/I. Records created by the Centralny Komitet Żydów w Polsce (CKŻP), and 1950 transferred to the ŻIH Archives. The United States Holocaust Memorial Museum Archives received the collection from the ŻIH via the United States Holocaust Museum International Archives Project in Sept. 2012.