The London International Stamp Exhibition. May 6th-13th, 1950. To be held in the Great Room, Grosvenor House, Park Lane, W.1. Sponsored by the Royal Philatelic Society, London, in co-operation with the British Philatelic Association. (Prospectus, final report.) [With plans.]
Royal Philatelic Society (Great Britain)
London,
1949-1951.