Another vote for English's in Montoursville (just east of Williamsport). Check their website for hours. There's a large amount of model railroad supplies on open shelves. And if you don't see what you want, ask--there's even more in back rooms/warehouse areas, and helpful staff will go get something for you. All part of Bowser, with English's being the retail brick and mortar store (and Toy Train Heaven the mail order retail business). Other than English's, I don't know of anything else in the area.
I'll heartily endorse NittanyLion's recommendation, as it's my favourite to visit. When I go to see a friend in Ohio, I often also make a point of visiting Montoursville, which makes it a roundtrip of about 750 miles.
Wayne
English's Model Railroad Supply in Montoursville, the home of Bowser
Hi all,
I'll be in the Williamsport PA area next Tuesday. Any hobby stores I ought to visit?
Alvie