Delta Air Lines System Timetable 1949 September 25
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1949 September 25." Delta Flight Museum. 1949-09-25, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19490925.
APA
Delta Air Lines, Inc. (1949-09-25). Delta Air Lines System Timetable 1949 September 25. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19490925
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1949 September 25." 1949-09-25. July 23, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19490925.
