For the last several years, I have been hiking long distances across the Monadnock Region of NH, utilizing historical maps of the area.  No individual has been more instrumental to my route-finding than Samuel Wadsworth (a Keene jeweler, surveyor, and local historian), whose maps were drawn and annotated with exquisite detail.   A full scan of his keyed map of Keene and Roxbury with Historical notes is available at this link (large file will open/download slowly).