"Harry Posmantier and family papers"@en . . "United States Holocaust Memorial Museum"@en . "irn501341" . . "folder\n\n1"@en . . . . . "Contains photographs of a relative who died at Auschwitz and a photograph of the donor's brother, Sam, who was a Jewish policeman at Landsberg DP camp. There also is a photocopy of his postwar ID certificate."@en .