Paterson, NJ: Wright Aeronautical Corporation, 1941.. 1941.. Good. - Quarto [11-1/2 inches high by 8-3/4 inches wide], limp brown cloth titled in gilt on the front cover & spine. The binding is rubbed with some white staining to the front cover & a small white stain to the rear cover. xviii pages plus separately numbered sections, 7 diagrams including 6 folding, blanks for notes & a 17-page index. There are some small stains to the rear endpaper & a small area of its surface is rubbed away. The bottom corners of the first few leaves are creased. Black-and-white illustrations and diagrams. Good.