SCOTCH PLAINS — Brian E. Dunleavy will present “Betrayal: George McClellan, The Peninsula Campaign & the Death of General Philip Kearny” at the Tuesday, March 25 meeting of the Historical Society of Scotch Plains and Fanwood. The meeting will begin at 7:30 p.m. and will be held at the historic Shady Rest Country Club, located at 820 Jerusalem Road (at the corner of Plainfield Avenue), Scotch Plains.