Providence Plantation, a center for living history presentations about 18th century frontier life at 300 Textor Hill Road, Evans City, hosts an “18th century Father's Day Program” from 5 to 8 p.m. Saturday. It will include period character interpreters, a guided tour, Scottish and Irish fiddle tunes, and a candlelight dinner based on 18th century recipes. Cost is $30 for adults and $15 for children younger than 13. Reservations are required by Saturday. Call 724-538-8818 or visit providenceplantationpa@org.

Old Stone House hosts a Pioneer Day Celebration showing what it may have been like to be a settler in Western Pennsylvania from noon to 5 p.m. Saturday. Donation is $3 per person or $5 per family. The Old Stone House is at the intersection of Routes 8, 528 and 173.

Harmony Museum, Mercer Street, Harmony, offers tours from 1 to 4 p.m. daily except Mondays. Reservations are suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, or visit www.harmonymuseum.org.

Cranberry Public Library, 2525 Rochester Road, Cranberry Township, hosts a visit by Siobhan Vivian from 1 to 3 p.m. Wednesday. The author will talk to teens about her new book, “The List” and answer questions. Copies of her books will be raffled off. Call 724-776-9100.

Meadowcroft Rockshelter and Historic Village hosts its annual Atlatl competition from noon to 5 p.m. Saturday and 1 to 5 p.m. Sunday. An atlatl is a spear-thrower that was used by prehistoric hunters. Meadowcroft is at 401 Meadowcroft Road in Avella, Washington County. Admission is $10 for adults, $9 for senior citizens, $5 for students with valid ID, $5 for children ages 6 to 17, and free for children younger than 5. Call 724-587-3412.