This is from the 1973 timetable (which is too light to scan). Don't think there were any changes from 1971.
Parlor Car - Atlanta - New Orleans
Reclining Seat Coach - Washington - Birmingham
Reclining Seat Coach - Washngton - New Orleans
Reclining Seat Coach - Washington - Atlanta
Reclining Seat Coach - New York Citty - New Orleans
Reclining Seat Coach - New York City - Birmingham
Sleeping Cars
Wash - Atlanta - DR, MR, Bft-Lge
Wash - Atlanta - 10-6
New York - Birmingham - 10-6
New York - New Orleans - 10-6
Dining Car - Washington - Atlanta
Atlanta - New Orleans
Tavern Lounge Car - Wash - Atlanta
This train was all streamlined usually with 4 E units up front.