(Curtiss Aeroplane and Motor Corporation). The Curtiss Standard JN4-D Military Tractor Handbook. Buffalo, NY, 1918. 72 pages, photo and drawing illus, Sm 8vo (5x8"), green cloth covers. Fair-good condition, cover blemishes and several water stained pages but balance of text block is good+. This is the genuine vintage handbook for the famous "Jenny" trainer in WWI and barnstorming aircraft post-WWI. These are increasingly difficult to find in original WWI condition.