00927nas a2200277 a 4500 officialaviatio1 CaSfIA 20190307123232.0 m o d cr|||||||||||| 891208 19291942ilumr p o 0uuua0eng d SMI SMI CaSfIA The Official aviation guide of the airways. Chicago : Offical Aviation Guide Co., [1929]-1942. 1 online resource (v. : illustrations, maps) Monthly Began v. 1, no. 1 [Feb.?] 1929-ceased with Sept. 1942. Description based on: v. 9, no. 1 (Apr. 1937). Airlines Timetables Periodicals. Air travel guide. Airline rates and routes. Official guide of the airways. https://archive.org/details/officialaviatio1 Free eBook from the Internet Archive officialaviatio1 v.1 (1929:Jan.-May) ark:/13960/t86j1bs06