Unknown2018-10-042018-10-041962EPM-064-01-004http://hdl.handle.net/20.500.11867/141722 sheets 9 x 11.5 inch. Printed. Date est.Photos and brief descriptions of planes ranging from 1926 through 1961. Order sheet for glossy photos of the aircraft.AeronauticsPlanes in Northwest Airlines History, 1 and 2.