PROSPECT — AHalloween Dance will be held from 8:30 p.m. Saturday to 12:30 a.m. at the Prospect Fire Hall, 373 Main St.

Music will be provided by Just Another D.J.

Drink mixes and snacks will be available. Participants should take their own beverages. For tickets, call 724-865-9505.

COWANSVILLE — The Washington Township Volunteer Fire Department and Washington Township Memorial Park will host their 24th annual Haunted House from 7 to 10 p.m. Friday through Sunday at the former Sherrett SchoolHouse.The school is on Sherrett/Wattersonville Road.

ZELIENOPLE — AHalloween makeup workshop will be held at noon Saturday at the Zelienople Public Library, 227 S. High St.The program is open to students age 8 and older. Registration is required by calling the library at 724-452-9330.

EVANS CITY — Abenefit will be held from 10:30 a.m. to noon Saturday at St. John's United Church of Christ, 501 E. Main St., to raise funds for Lexi Smith, 8, who is awaiting treatments to correct blindness.Presented by an Arbonne vendor, the event will offer information on skin care, nutrition, weight management, aromatherapy and cosmetics.Information about Lexi's Fund is available at www.lexisfirstsight.com.Intermediate League hosts PARCpartyThe Intermediate League of Butler will host its annual PARC Fall Party at 6:30 p.m. Friday at the sheltered workshop at the corner of Washington and Jefferson streets.

SAXONBURG — Arepresentative from Allegheny Health and Rehabilitation will host a seminar at 6 p.m. Thursday at the Saxonburg Library, 240 W. Main St.The topic of the seminar is "A Fresh Approach to the Prevention and Maintenance of Juvenile and Adult Diabetes."For reservations, call 724-352-4810.

SLIPPERY ROCK TWP — The Slippery Rock Community Library will hold a live and silent auction at noon Saturday at the Slippery Rock Township Building.The event will be catered by the Slippery Rock Women's Club. Participants who register in advance will receive free dessert and a prize.For details, call 724-816-8452 or e-mail molly@slipperyrocklibrary.com.

FREEPORT — Adiscussion of the book "To Kill a Mockingbird" by Harper Lee will be held at 2 p.m. Monday at the Freeport Library, 428 Market St.Copies of the book and an audio version are available at the library. For details, call 724-295-3616.

CALLERY — Aham dinner will be held from 4 to 7 p.m. Saturday at Crestview Community Church, 210 Kline Ave.The dinner will benefit Valerie Blizman, who is undergoing treatment for cancer.