United States Holocaust Memorial Museum Collection, Gift of the descendants of Rosel Benedkit Neuburg Katherine Virkus Ecklund, Robert Lane Virkus, Stephanie Elisabeth Lewis Sykes, Noelle Jennifer Lewis, and Jacob Lewis Levy. Primarily written by Rosel Benedikt Neuburg (Rosel Neuburgova) and sent to her daughter Elisabeth"Liese" Amalie Margaret Neuburg in April 1942. Donated to the United States Holocaust Memorial Museum in 2018 by Katherine Ecklund, daughter of Elisabeth Neuburg.