A car, truck and bike cruise sponsored by the Prospect Community Days will take place from 5 to 9 p.m. Saturday at the Fairground Market on Route 422, across from the Big Butler Fairgrounds.

Music, food and prizes will be available. The event is a fundraiser for the Prospect Historical Society. For more information, call 724-865-9697.

BRADY TWP — The basics of navigation using a global positioning unit, map and compass will be the topic of a program at 1 p.m. May 31 at Jennings Environmental Education Center, Route 528 near the intersection of Routes 8 and 173.This leisurely two-hour hike will help participants uncover the unique qualities of the park using old-school and modern navigation techniques.Admission is free. Call 724-794-6011 for more information.

Butler Little Theatre has announced the five shows that will comprise the 2008-09 season.The group's 68th season will include:• "Murder at the Howard Johnson's," a comedy, October• "UTBU," a farce, November/December• "Deathtrap," a thriller, January• "Anybody Out There?" a comedy, March• "Rumors," a comedy, May 2009.Interested directors and producers should send e-mail to bltboard@bltgroup.org.

PITTSBURGH — Carnegie Museum of Art presents an exhibition of abstract art that highlights big names and never-before exhibited works."Abstract Art before 1950: Watercolors, Drawings, Prints, and Photographs" will be on view in the Scaife Works on Paper gallery from June 13 to Oct. 18.Viewers to the exhibition will encounter many of the avant-garde movements in which American, European, and Japanese abstract artists participated: cubism, futurism, dada, Russian suprematism, constructivism and early abstract expressionism.Continuing is "Life on Mars, the 2008 Carnegie International," through Jan. 11.Hours are 10 a.m. to 5 p.m. Tuesdays through Sundays; closed Mondays and major holidays. Admission, which includes the Carnegie Museum of Natural History, is $15 for adults, $12 for senior citizens, and $11 for students and children age 3 and older. Call 412-622-3131 or visit the Web site, www.cmoa.org.

PITTSBURGH — The 49th annual Three Rivers Arts Fest, with 300 artists, more than 50 live music performances, 15 visual arts installations and four original dance and theater productions, will enliven downtown Pittsburgh's historic plazas, city streets and open spaces from June 6 to 22. Point Park is still closed for renovations.Highlights include:• "Contained," a new exhibition that engaged 10 artists and artist teams to transform used shipping containers into immersive art experiences.• "Take Me Out," Tony Award-winning play.• "Dream Machine," an interactive sculpture by Schenley High School graduate Nathan Green, inviting interaction with whimsical playground equipment in Market Square.• The annual Duquesne Light Artists Market, featuring 300 artists and crafters.• The UPMC Health Plan Family Festival, featuring hands-on art experiences and the new Community Stage, where children from around the region will perform dance, music and theater.• 17 nights of performances on the Festival Main Stage, located at the Stanwix Triangle.Hours for the Duquesne Light Artists Market and indoor exhibits are noon to 8 p.m. daily. Performances and food courts run from noon to 9:30 p.m. daily.UPMC Health Plan Family Festival runs from noon to 7 p.m. each day. Most programs free and open to the public.For more information, call 412-281-8723 or visit the Web site, www.artsfestival.net.

NEW CASTLE — The New Castle Playhouse will present "Echoes of the War," two short plays by J.M. Barrie, best known for his famous play "Peter Pan," from June 6 to 22 at the annex theater, 212 E. Long Ave.The one-act plays are "The Old Lady Shows Her Medals" and "The New Word."Curtain is at 7:30 p.m. Friday and Saturdays and at 2 p.m. Sundays.Tickets are $10. Call 724-654-3437 from 9 a.m. to 4 p.m.

PITTSBURGH — Calliope: The Pittsburgh Folk Music Society will celebrate Pittsburgh's 250th anniversary with Rootz: The Green City Music Festival on July 12 in Mellon Park. Admission is free.The festival will begin at 11:45 a.m. and run until 10 p.m. with a full day of concerts and children's activities.Six-time Grammy Award nominee Mike Seeger will kick off the festival with a concert at 7:30 p.m. July 9 under the tent at the Pittsburgh Center for the Arts, 6300 Fifth Ave. in the Shadyside section of Pittsburgh. A reception will being at 6:30 p.m. Tickets are $30 for the concert only or $75 for the reception and concert.For more information about the festival, call 412-361-1915 or visit the Web site, www.calliopehouse.org.