first edition Softcover
1919 · Washington
Washington: Government Printing Office, 1919. Softcover. Near Fine. First edition. 16pp. Illustrated with black and white plates. Stapled wrappers with two-hole punch at spine. Small chip on foredge of page 11, spine and edges tanned, still near fine. For use in airplanes, with data on specifications and performance. Scarce, *OCLC* locates only 5 copies. (Inventory #: 421495)