Collection of stamps cards and covers illustrating the development of international air post 1870-1950 / amassed by Miss Winifred Penn-Gaskell. 85: Quantity of periodical literature on aspects of air post, published 1919-1946. Some from WE Hughes. Various countries. Notably: Deutsche Luftpostzeitung 1925-1938 including Zeppelin and Hindenberg flight references, new stamp issues, citations of Miss Penn-Gaskell's awards in international exhibitions. Listed Quantity of periodical literature on aspects of air post, published 1919-1946. 1919-1946