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.
Wild Geometry Photographs of wildflowers by James Shirey, juxtaposed by Pete McCutchen's Geometrics photo series of Las Vegas architecture, Crary Art Gallery, 511 Market St., Warren (www.crarygallery.org), 11 a.m.-8 p.m.
Rummage sale, Irvine Presbyterian Church, bake sale, lunch available, 8 a.m.-noon (items $1 a bag Friday).
$6 Jewelry Sale, 7 a.m.-4 p.m. in Warren General Hospital outpatient lobby. Benefits the WGH Auxiliary and its many programs.