. "irn518972" . "Pierre Hartendorf collection"@en . "Consists of copies of official paperwork and archival records regarding the Holocaust experiences of Pierre Hartendorf, originally of Haarlem in the Netherlands, who was imprisoned in Sachsenhausen in 1944. Includes testimony by Mr. Hartendorf's daughter, written in 1989, describing his arrest and imprisonment."@en . . . "folder\n\n1"@en . . . . . "United States Holocaust Memorial Museum"@en .