Among the fallen or acquired:
Interflug (The East German airline)
Pride Air (hubbed at MSY)
Provincetown-Boston Airways
Air New England
Bar Harbor
Mohawk
Alleghany (the big airline...with the hometown touch!)
PeoplExpress
Piedmont
Capitol
Republic (still have my original Perks card)
Pan Am
BOAC
Air Europe (the UK airline, not Air Europa)
Westair
Hughes Airwest