Thomas A. Desjardins, State of Maine Historian, Civil War historian, and lifelong student of Joshua Lawrence Chamberlain and the 20th Maine Regiment will share the details of the triumphs, trials, and failures of Chamberlain’s personal and professional life. Topsham Public Library, 25 Foreside Road, Topsham, ME 04086, (207) 725-1727, www.topshamlibrary.org.