Trexlertown Velodrome, lots of history there.

Folks often mention the Salmon colored KoolStop brake pads for steel rims.

Try to avoid pinched-on rear stays where it looks like the tubing was simply flattened or pinched onto the rear dropout bracket. Some front forks have been built this way as well.

Try to avoid the Positronic shifter setup. If the front cranks freely spin backwards without the chain moving abd if the rear cluster does not freewheel then I'd suggest avoiding it. Many folks have put many miles on Positronic bikes, but as a rule I avoid them.

And most important of all, when you do get one you have to report back and post pics of it.