HISTORY—6 p.m. “Pomeroy Marker Unveiling.” Celebrating John Kidder, one of the commanders of “Upton’s Regulars.” Followed at 7 p.m. by “A Civil War Documentary: 121st New York Volunteer Regiment—Upton’s Regulars,” chronicling the story of the regiment recruited from Otsego and Herkimer counties. Starts at the Laurens Legion, 11 Main Street, Laurens. (607) 432-6314 or https://www.facebook.com/photo/?fbid=38354868300793671&set=a.4960836983956899…