. . "folder\n\n1"@en . "Maria Ryder papers"@en . "United States Holocaust Memorial Museum"@en . . . . "The Maria Ryder papers consist of two letters from Maria Piatek (later Maria Ryder) in Ravensbrück concentration camp and one letter addressed to Maria Piatek on a pre-printed form entitled\"Kriegsgefangengenpos\" (prisoner of war mail). The letters were written while Maria Piatek, number 11287, was imprisoned in Ravensbrück concentration camp blocks 16 and 17. The letters also include censor stamps."@en . . . "The Maria Ryder papers is arranged a single series."@en . . . . "irn516034" . .