Caribbean internment camp envelopes

Two empty envelopes, sent by internees in camps for European refugees in the Caribbean during World War II. One envelope, with illegible postmark, was sent by Ruchel Nayberg from Gibraltar Camp 2, in Jamaica, British West Indies, addressed to Michel Nayberg care of Mr. Bidermann's bookstore in New York. The second envelope, postmarked May 1945, was sent from Heinrich Hauser, at Camp Guatemala, Bonaire, Netherlands West Indies, addressed to Olaf Domnauer in Paterson, New Jersey. Both envelopes show evidence of having been opened and examined by censors.