United States Holocaust Memorial Museum Collection, Gift of Ruth Switzer United States Holocaust Memorial Museum Collection, Gift of Ruth Switzer The collection was donated to the United States Holocaust Memorial Museum in 2015 by Ruth Switzer, daughter of Erwin and Ernestine Schattner. An accretion was donated in 2018. The accessions previously numbered 2015.595.1 and 2018.391.1 have been incorporated into this collection.