Where can I buy nut roll and poppyseed roll in the Philadelphia area?
There are a handful of Polish bakeries and delis in Port Richmond - that would be a good place to start. I know Krakus Market on Richmond street has it - but I've never had it (but they have good stuff usually). I'm sure someone else could point you in the right direction up there.
Beiler's Bakery in the Reading Market usually has one or the other. They get it from a bakery in central PA. (I'm referring to the softer "breadier" rolls as in N Central Europe, not the flakier ones from the Balkans. I don't know where to get that.)