Mexico. (Interment Camp Mail). 1942. Air Mail envelope written by a Scandinavian internee from 'Perote Interment Camp' with Camp seal on reverse, addressed to 'International Red Cross, Agence Centrale des Prisonniers de Guerre, Geneva, Switzerland' bearing Mexico 'Air Mail' Yvert 63, 20c carmine (2) and Yvert 66, 50c green tied by Perote date stamp, endorsed 'By Transatlantic Clipper to Lisboa' routed via the United Stats with 'Censor/ U.S.A.' censorship label and german censor tape tied by circular German censor hand-stamp in carmine. Very nice item.