. "United States Holocaust Memorial Museum Collection, Gift of Leon Leiberg\n\nAnna Hoffman was married to Leon Leiberg's father, Konrad Leiberg, in 1936 in Vienna, Austria. The identity card was found in the archives of the Maline camp, abandoned by the retreating Germans, and kept there by Belgian authorities, in Brussels after World War II, and obtained by Leon Leiberg during a visit and search of information from the archivist."@en . .