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. Source of acquisition is the Żydowski Instytut Historyczny im. Emanuela Ringelbluma (ŻIH). The original records are held in the YIVO Institute for Jewish Research in New York, Record Group 225. Hersch Wasser secretly shipped documents from the Ringelblum Archives from communist Poland to France trying to save them that way. Digital copies of documents were made out of microfilms handed over to the Żydowski Instytut Historyczny im. Emanuela Ringelbluma (ŻIH) in Warsaw by YIVO in NY. Digital collection was sent to the US Holocaust Memorial Museum, International Archival Programs in 2009 and later transferred to the Musuem Archives.