United States Holocaust Memorial Museum collection, gift of Betty Troper Yager Standard citation for the United States Holocaust Memorial Museum, Curatorial Affairs Division, Steven Spielberg Film and Video Archive United States Holocaust Memorial Museum collection, gift of Betty Troper Yager Betty Troper Yager, Morris Troper’s daughter, donated the Morris Troper papers to the United States Holocaust Memorial Museum in 1997, 2005, and 2014. The accessions formerly cataloged as 1997.36, 2005.27.1, and 2014.548.1 have been incorporated into this collection.