
Stamps, cards and covers illustrating international air post, 1870-1950
Collection of stamps cards and covers illustrating the development of international air post 1870-1950 / amassed by Miss Winifred Penn-Gaskell. 84: Quantity of monograph literature on aspects of air post, published 1919-1946. 84/1: Homing Pigeons - Meritorious service in the Royal Air Force / Air Ministry. April 1919. 20pp. Giving appraisals of performances, by ring number