The materials were found in a box of personal papers belonging to Sam and Mitzi Jung, parents of Leo Young. The postcard was sent by Maurice Jung, and the letters were sent by a non-Jewish POW and the POW's sister, who wrote letters to the family on behalf of Sam Jung's younger brother, Maurice. The materials were first received by Dr. Barbara Abromowitz of the United States Holocaust Memorial Museum Campaign to Remember office and later transferred to the United States Holocaust Memorial Museum Archives.