How do you check land appreciation over the years?

[Jared Chenel]

I'm considering buying a piece of land to hold for a few years in hopes of selling once it's appreciated to a certain point. My question is what are some strategies or resources to look at for checking a towns' appreciation of its land?

The state is New Hampshire and it's up near the white mountains.

Anything you can throw my way in terms of thoughts or resources is greatly appreciated!!