Delta Air Lines System Timetable 1959 September 1
MLA
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1959 September 1." Delta Flight Museum. 1959-09-01, https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19590901.
APA
Delta Air Lines, Inc. (1959-09-01). Delta Air Lines System Timetable 1959 September 1. Retrieved from https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19590901
Chicago
Delta Air Lines, Inc.. "Delta Air Lines System Timetable 1959 September 1." 1959-09-01. July 23, 2025. https://dlg.galileo.usg.edu/do:delta_dal-tt_dal-tt-19590901.
