Hey! That's my neck of the woods. (I grew up in NH).
There are mostly maples and oaks up there, as far as hardwoods go. Good, strong woods, both of them. There are birches there too but I've not had much fun making bows from birch. Lots of dogwood too and if you can find a big dogwood bush with a large limb inside, by all means take it.
Other woods you might try are apple (crab-apple), cherry, and elm. There's a bunch of others but the ones I've mentioned are the most common.