Vintage original AIR NAVIGATION

11" X 8.5" in dark blue leather-like material bound together with bolts. Silver titles and cover decoration. Original owner, overall - clean, EXCELLENT condition, with 2 very small markings on cover. "RESTRICTED." 558pp. Illustrated throughout. [CB060] FIRST EDITION. Air Force Manual #51-40, Department Of The Air Force, Washington, June 1951. Contents: Earth's surface & Mapping; Dead Reckoning; Aids To Dead Reckoning; Radar Navigation; Pressure Pattern Flying; Flight Planning; Special Problems; Advanced Navigational Instruments; Instrument Calibration; Star Names/Pronunciation; Indexed; Illustrated; Maps/Charts etc. Interior is clean and complete.