Circle Around Monadnock: Time Travel With Horses by Francelia M. Clark

Francelia Clark and her friends, Pam Godin and Shelley Mozier, find and follow two of the oldest trails in the Monadnock region into history—on horseback. Over the course of 3 days, Francelia, Pam, and Shelley, wend their way around the mountain, discovering and documenting much of the early history.