Steven P. McNicoll wrote:

Southwest Airways routes definitely did not extend to Atlanta. Southwest
ceased using DC-3s around 1955 and in 1958 changed it's name to Pacific Air
Lines, so I don't see how you could have seen Southwest Airways DC-3s
serving Hartsfield in the late 70s.

Perhaps a privately owned restoration? I definitely saw a pristine DC-3 in that
livery taxi by at Hartsfield in '78 or '79.

George Patterson
Give a person a fish and you feed him for a day; teach a person to
use the Internet and he won't bother you for weeks.