If you have money dripping out of your pockets (they are more than $500 these days), St Petersburg shows both a Hog Island car and a PCC. Once you buy one you still have to power it.
I have a St P. Red Arrow car and it is beautiful.
If you're a kt builder, some show up on ebay.
The Bachmann single trucker in United livery is a pretty good representation of an early Phila (way before SEPTA or PTC) trolley. Current Line offers to convert it to std gauge for $25; don't know if the offer still lives.
wbb/Bachmann offers a Peter Witt in PTC livery with the wrong end. It is reputed to be an excellent runner.