United States Holocaust Memorial Museum Collection, Gift of Ruth Abraham United States Holocaust Memorial Museum Collection, Gift of Ruth Abraham United States Holocaust Memorial Museum Collection, Gift of Ruth Abraham Ruth Abraham, daughter of Ilse and Horst Abraham, donated the Ilse and Horst Abraham papers to the United States Holocaust Memorial Museum in 2016, 2017, and 2019. The accessions formerly cataloged as 2016.538.1, 2017.674.1, and 2019.18.1 have been incorporated into this collection.