Warren County Historical Society, 210 Fourth Ave., 8:30 a.m. to 4:30 p.m.
Warren Public Library, Market St., Warren, open, 10 a.m.-5 p.m.
Community lunch, free to the public, The Salvation Army, 311 Beech St., noon.
Warren High School Class of 1947, lunch, Cable Hollow Golf Course, 11:30 a.m.
Scrubs Sale by Erie Uniforms, 7 a.m.-4 p.m. in the outpatient lobby of Warren General Hospital, sponsored by the WGH Auxiliary.
Doctor Awkward (rock), Music in the Park, Soldiers & Sailors Park, Hickory St. at Pennsylvania Ave. W., Warren, sponsored by Northwest Savings Bank, 8-10 p.m., weather permitting.
Cornfest sponsored by Revitalization of Youngsville (ROY), Youngsville.
At Chapman State Park: hike Adams Run Trail, meet at restroom at sled riding hill, 6 p.m.; movie night, "Planet Earth, 'Forests'," amphitheater, 9 p.m. (723-0250, ChapmanEE@pa.gov).
"Parenting During Recovery" class, Forest-Warren Human Services, Hospital Dr., North Warren, 9:30 a.m.-noon (726-2100).