United States Holocaust Memorial Museum Collection, Gift of Richard Ettelson United States Holocaust Memorial Museum Collection, Gift of Ralph Ettelson The collection was donated to the United States Holocaust Memorial Museum by Richard Ettelson in 2016. An accretion was donated in 2019. Richard is the son of Ralph Ettelson. The collections previously cataloged as 2016.381.1 and 2019.107.1 have been incorporated into this collection.