ART

Peters -- Works by the McMurray Art League are displayed in an exhibit that changes every six weeks at Peters Township Library, 616 E. McMurray Road. The current offerings continue through Jan. 13. A percentage of sales proceeds benefits the library.

HEALTH

Canonsburg -- Free blood pressure screenings are held from 9 a.m. to noon weekdays at Canonsburg Hospital Community Health Care Center, 36 E. Pike St.

HOLIDAY HAPPENINGS

Chartiers -- Trolleys and Trains will be presented from 11 a.m. to 5 p.m. Saturday and next Sunday and Dec. 27-30 at the Pennsylvania Trolley Museum, 1 Museum Road. Rides will be available on decorated trolleys. The You-Run-It Lionel Toy Train layout will be in operation. Admissions are $6 for adults; $5 for those 65 or older; $3.50 for those 2-15; and free for those younger than 2. For information, call toll-free at 1-877-728-7655.

LIBRARIES

Chartiers -- The free Night Before Christmas story hour will begin at 6:30 p.m. Friday at Chartiers-Houston Community Library, 730 W. Grant St. There will be popcorn and cocoa. Children may attend in pajamas. Registration is available at 724-745-4300.

Peters -- The annual Family Christmas Ornament Night will be held from 7 to 8:30 p.m. Thursday in Peters Township Public Library, 616 E. McMurray Road. Cost is $3 for three ornaments. A new young adult program for grades 6-12 called Night @ the Improve will be held at 7 p.m. tomorrow. The adult book club will discuss "Wheels for the World" by Douglas Brinkley at 1 p.m. Wednesday. To register for any program, call 724-941-9430.

MEETINGS

Peters -- Women of Southwestern PA will hold a social and program at 6 p.m. Thursday in Valley Brook Country Club, Hidden Valley Road. An Evening of Christmas Carols will be presented. Dinner is $21. To RSVP, call 724-941-6135.

RELIGION

North Strabane -- "Amahl and the Night Visitors," an opera and choir concert, will be held at 8 p.m. Friday and Saturday and 2:30 p.m. next Sunday at Thomas Presbyterian Church, 1068 Linden Road. For information, call 724-941-8910.

Peters -- Our Redeemer Lutheran Church, 105 Gateshead Drive, will hold Breakfast at the Manger from 10 to 11 a.m. next Sunday. The program will be presented before and after the breakfast. There is no charge, but reservations are required at 724-941-7467.

Peters -- New members are welcome at an Advent program of prayer and hope sponsored by the Separated or Divorced Group at 7:30 p.m. tomorrow in the parish library at St. Benedict the Abbot Church, 120 Abington Drive. For information, call 724-941-9406.

SPECIAL INTEREST

California -- The 159th commencement will be held next weekend at California University of Pennsylvania's Hamer Hall gymnasium. Commencement for the school of Graduate Studies and Research will be at 7 p.m. Friday. U.S. Rep. John P. Murtha, D. Johnstown, will be the speaker. Alumnus and retired businessman William T. Booker will speak to undergraduate degree recipients in a ceremony at 10 a.m. Saturday. For information, call 724-938-1522.

Canonsburg -- Free car seat safety checks will be given from 2 to 4 p.m. Wednesday at Canonsburg Ambulance Service, 209 W. Pike St. Call 724-745-6911 for an appointment.