(Covers to) Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.ANorthwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.ACovers: Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast

Chicago citation style
Northwest Airlines, Inc. (Covers to) Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.A,Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.A,Covers: Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. 1939. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~292174~90064348. (Accessed December 16, 2018.)
APA citation style
Northwest Airlines, Inc, (1939) (Covers to) Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.A,Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Souvenir Air log. (on recto) Maps and points of interest along Northwest's Short Cut Route between Chicago, Twin Cities, and the Pacific Coast. 1939 Northwest Airlines, Inc. Printed in U.S.A,Covers: Northwest Airlines : short cut, Chicago, Twin Cities, Pacific Coast. Retrieved from the Digital Public Library of America, https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~292174~90064348
MLA citation style
Northwest Airlines, Inc. Retrieved from the Digital Public Library of America <https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~292174~90064348>.
Note: These citations are programmatically generated and may be incomplete.