United States Holocaust Memorial Museum Collection, Gift of Usula C. Klau United States Holocaust Memorial Museum Collection, Gift of the Estate of Ursula Klau The Ursula Klau papers were donated in 2006 by Ursula Klau and in 2008 by the Estate of Ursula Klau. Accessions previously cataloged as 2006.410.1, 2008.115.1, and 2008.115.2 have been incorporated into this collection.