Cite This Item
MLA
United States. Bureau of Air Commerce. Civil airways of the United States as designated in Civil Air Regulations - chapter 60. Washington, D.C.: Bureau of Air Commerce, 1937. Web. 19 Apr 2024. <https://ark.digitalcommonwealth.org/ark:/50959/0z709330j>.
APA
United States. Bureau of Air Commerce. (1937). Civil airways of the United States as designated in Civil Air Regulations - chapter 60 [Map]. Retrieved from https://ark.digitalcommonwealth.org/ark:/50959/0z709330j
Chicago
United States. Bureau of Air Commerce. "Civil airways of the United States as designated in Civil Air Regulations - chapter 60." Map. Washington, D.C.: Bureau of Air Commerce, 1937. Digital Commonwealth, https://ark.digitalcommonwealth.org/ark:/50959/0z709330j (accessed April 19, 2024).