Sportsman's Warehouse has a few more than Gander. But really not a good selection.
There's a shop off of Exit 114 that occasionally has a couple. It is called Whitetail Outfitters.
Lots of outdoors shops in the area, but none specialize in trad.
Good overall archery shop is also at Exit 17 it is called Mahoney's. But just no trad bows.
Also, like Marc said, lots of stuff at Exit 7. There is a Sportsman's Liquidators there that sometimes has some good prices on clothing/blinds (especially if you're a big guy).