On Aug. 10 at 7 p.m., Headwaters will host guest speaker Kevin Underwood as he talks about the history and evolution of firearms in Montana through the 19^thCentury. Underwood has successfully completed a rigorous three-year gunsmithing school at Yavapai College. He is a member of the Montana Historical Gunmakers Guild and has been gunsmithing for the past nine years, specializing in 19^th Century arms.