TWA flew STL
around 1999-2000 somewhere, DC-9-30s then ERJs. I believe they also served YVR
back in the early 60s.
PanAm had services to both YUL
at some points in the 80s, YYZ
possibly into 1990.
Both airlines "served" Gander in the late prop/early jet era as well of course, TWA also "served" Winnipeg with L1649s for a time...
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.