Pan Am Railways is the brand name, just like Guilford Rail System was. B&M, MEC and PTM own property and equipment, as does ST, but ST also has the designation of operating the system, If we're going to get technical. And that wasnt my point.
I realize the name still exists, even in official uses. So to does Burlington Northern, whose reporting marks and name remain on the rails. Yet nobody is saying "BN or whatever the name is this week" even though the "BNSF" name is only officially a year older than Pan Am's rebrand.
Don't mean to gripe, just seems that those of us who claim to be aware of the railroad, from outside, inside, outside now, formerly inside, etc. should start by getting the name right.
I admit, in conversation I occasionaly "Guilfordslip" but here, I proof my posts and any Guilford reference gets replaced, unless I'm specifically refering to a gray locomotive, or a matter of history before 2006.