Johnny Johnson, first SF-SJ Airmail route [ca. 1925]

Chicago citation style
Gordon, John C. Johnny Johnson, first SF-SJ Airmail route [ca. 1925]. [ca. 1925]. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt429018b6. (Accessed December 12, 2018.)
APA citation style
Gordon, John C, ([ca. 1925]) Johnny Johnson, first SF-SJ Airmail route [ca. 1925]. Retrieved from the Digital Public Library of America, http://ark.cdlib.org/ark:/13030/kt429018b6
MLA citation style
Gordon, John C. Retrieved from the Digital Public Library of America <http://ark.cdlib.org/ark:/13030/kt429018b6>.
Note: These citations are programmatically generated and may be incomplete.