Wireless Linc of New Hampshire and Vermont
This project's goal is to provide an open access broadband network throughout Coös, Grafton and Carroll Counties of New Hampshire and the Northeast Kingdom of Vermont.

Wireless Linc of New Hampshire and Vermont is  a  project of the North Country Investment Corporation and the Littleton Industrial Development Corporationa 

Wireless Internet Service Providers
This list of wireless vendors does not seem to be comprehensive, but the information should be reliable since the last update was in 2011.

How Wireless Broadband Works
This article provides the following: an Introduction; Principles of Wireless Communications; Modes of Wireless Communication; and History.