Royal Air Force squadron badges / Peter C. Smith de geschiedenis van de koninklijke luchtmacht. hoofddeel 1 wapen der militaire luchtvaart tijdens de Tweede Wereldoorlog in Groot -Brittannie, 31 mei 1940 - 9 mei 1945 / door J.W.T. Bosch Personal Papers in the Albert F.Simpson Historical Research Center / comp. and ed. by Richard E. Morse and Thomas C. Lobenstein Halifax" EY-S keerde niet terug : pilotenhulp tijdens de oorlog : waarin opgenomen: het ontsnappingsverhaal van Fl. Ltn. George Duffee, D.F.C. / [samensteller George Duffee] Vliegtuigen van de wereld Field officer course : Intelligence-A Staff Function / Air University. Air command and staff school. Vol. 7: Intelligence Staff Division Field officer course : Organization / Air University. Air command and staff school. Vol. 1 Field officer course : Production and Dissemination of Intelligence / Air University. Air command and staff school. Vol. 7: Intelligence Staff Division Field officer course : Employment of land forces / Air University. Air command and staff school. Vol. 12: Operation Staff Division Field officer course : Weather / Air University. Air command and staff school. Vol. 5: Operations Staff division Field officer course : Training for operationel readiness / Air University. Air command and staff school. Vol. 5: Operations Staff division Field officer course : Functions and Responsibilities of command / Air University. Air command and staff school