The Book Cellar, books for sale, basement, Warren Public Library, 11 a.m.-2 p.m.
Chess club, Youngsville Library, 10 a.m.
Parenting "The ADD/ODD Child," Warren County Human Services, 27 Hospital Dr., North Warren, 9 a.m.-2 p.m.
49th Annual Sheffield Fireman's Festival, fireman's water battle, 9 a.m.; parade, 4 p.m.; midway opens, 5 p.m.; fireworks, 10:30 p.m.
Warren High School Class of 1957, lunch, Eagles Club, Pennsylvania Ave. E., Warren, 12:30 p.m.
"The Photographs of Clare J. Crary: People," Crary Art Gallery, 511 Market St., Warren, 11 a.m.-5 p.m.
"The Cat in the Hat," Children's Summer Film Series, free to the public, Library Theatre, Warren, 1 p.m.
The Photographs of Clare J. Crary: People, Crary Art Gallery, 511 Market St., Warren, noon-4 p.m.
Westfall family reunion, Brokenstraw Campgrounds, Rt. 6 between Pittsfield and Corry, 1 p.m.
Slovenian Polka Boosters, Ridgway Moose Club, 2-6 p.m.