Northwest Airlines Schedule 1938 November 1
MLA
Northwest Airlines. "Northwest Airlines Schedule 1938 November 1." Delta Flight Museum. 1938-11-01, https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19381101.
APA
Northwest Airlines (1938-11-01). Northwest Airlines Schedule 1938 November 1. Retrieved from https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19381101
Chicago
Northwest Airlines. "Northwest Airlines Schedule 1938 November 1." 1938-11-01. August 4, 2025. https://dlg.galileo.usg.edu/do:delta_nwa-tt_nwa-tt-19381101.
