because they're gone to the great terminal in the sky

My list (scheduled only):

Eastern Provincial (CP/AC)
QuebecAir/NordAir (CP/AC)
Air Cal (AA)
Frontier (CO? original)
Midway (original)
Eastern
Braniff
TWA (AA)
Republic (NW)
Ozark (NW?)
New York (CO)
Texas (became Continental?)
Toa Domestic
Japan Air Systems (still have time before absorption by JL) but not much)
UTA (AF)
British Caledonia (BA)
Ansett (original)

Misc. others
VIASA
Air Afrique
Mark Air
Morris Air

Yours?