Royal Flying Corps. Training Manual, Parts I & II, 1914 & 1915 (Part II reprinted with Am

Royal Flying Corps. Training Manual, Parts I & II, 1914 & 1915 (Part II reprinted with Amendments, 1916), diags. to text, orig. printed wrappers, soiled and some wear, approx. 13 x 10.5cm, together with Technical Notes, RFC, pub. H.M.S.O., 1916, thirty-eight folding diags., orig. cloth, a little rubbed, 8vo, plus Royal Naval Air Service Training Manual, November 1914, pub. H.M.S.O., 1915, numerous illusts. and diags., some folding, some finger soiling, orig. blind-stamped cloth gilt, rubbed, 8vo, plus Ministry of Munitions, The Twelve Cylinder Liberty Aero Engine (Confidential) For Use of Members of the Royal Air Force, August 1918, diags., some folding (misbound at rear), orig. printed wrappers, soiled and some wear, and Hobbs (F. Dudley), How to Fly and Instruct on an `Avro`, 1919, b & w illusts. from photos, orig. printed limp cloth, a little darkened on spine, slim 8vo, and four others similar (10)