United States Holocaust Memorial Museum Collection, Gift of Roman Haar. In memory of my mother Erna Haar who saved me. United States Holocaust Memorial Museum Collection, Gift of Roman Haar The letter was donated to the United States Holocaust Memorial Museum by Roman Haar in 1997 Received by Erna Haar (donor's mother), November 1942, Rzeszow, Poland. Inherited by Roman Haar upon the death of his mother, 1987. Donated to the United States Holocaust Memorial Museum in 1997 by Roman Haar.