F&E E(B) 10001/49/Pt 1 - Civil Aviation in the U.S.A.: Weekly News Letter nos.21-26, issued by H.M. Civil Air Attache, British Embassy, Washington D.C.
E(B) 10003/49 - Civil Aviation in France, Belgium, Luxembourg, the Netherlands and Italy: Monthly News Letter nos.1-6, issued by H.M. Civil Air Attache, British Embassy, Paris