"No restrictions on access"@en . "Postage stamp"@en . "No restrictions on use"@en . . . "irn9465" . . . "DDR 35; Wien"@en . . "The postage stamp was donated to the United States Holocaust Memorial Museum in 1995 by Irina Kamenkovich, Tamara Kamenkovich, and Natella Voiskinskaya, the family of Ilya Kamenkovitch."@en .