HAPPENIN’ OTSEGO for SATURDAY, AUGUST 11 Civil War Camp, Battle, Concert REENACTMENT – 10 a.m. – 9 p.m. Civil War encampment featuring soldiers in authentic uniforms drilling, performing maneuvers, singing period songs, more. Battle reenactment planned for afternoon followed by concert. Free, open to public. Lawn, Hyde Hall, 267 Glimmerglass State Park Road, Cooperstown. 607-547-5098 or visit hydehall.org/event/civil-war-weekend-saturday/ ART FESTIVAL – 10 a.m. – 5 p.m. 11th annual juried art fest celebrating the relationship between artist, landscape. Fest features contest between…