Saturday
The Book Cellar, books for sale, basement, Warren Public Library, 11 a.m.-2 p.m.
Chess club, Youngsville Library, 10 a.m.
Cornfest sponsored by Revitalization of Youngsville (ROY), Youngsville.
At Chapman State Park: program on wild mushrooms by Karen Croyle, amphitheater, 3 p.m.; movie night, "Fungi," meet Pavilion 4, 8 p.m. (723-0250, ChapmanEE@pa.gov).
North Warren Trash & Treasure Day, chicken barbecue at North Warren Fire Hall, 11 a.m.-gone.
Youngsville High School Class of 1959, informal gathering, Cedrone's, Ludwick Rd., Sugar Grove, 3 p.m.
"Active Parenting of Teens" class, Forest-Warren Human Services, Hospital Dr., North Warren, 9 a.m.-2 p.m. (726-2100).
Sunday
Cornfest sponsored by Revitalization of Youngsville (ROY), Youngsville.
Slovenian Polka Boosters, Ridgway Moose Club, 2-6 p.m.