"Verplanck Colvin and the Adirondack Survey" with Jim Schaller, a member of the “Colvin Crew”. This program will be about Colvin’s family history, which goes back to 1635, work and connections in the Hudson Valley, Helderbergs and the Capital District. Starts at 7 p.m. at Clarksville Community Church, 1997 Delaware Turnpike in Clarksville.