The Douglas DC6 was Delta's first pressurized aircraft.
In the early 1950s, Atlanta became the testing site of Delta's flight scheduling model.
http://img10.hostingpics.net/pics/26...irLinesDC6.png
Planes were scheduled to bring passengers to a hub airport where travelers connected to other Delta"s flights for destinations far and near.
Michel
http://cloudpainter.canalblog.com/
