Butler Little Theatre will have its annual business meeting and social on June 6 at the theater, One Howard St.

The evening begins at 7 p.m. with social hour followed by the business meeting at 8 p.m. and dessert and coffee at 8:30 p.m.

Reservations are due by June 1. Cost is $10.

Call 724-287-6781.

PITTSBURGH — The Pennsylvania Association of Numismatists will host a coin show this weekend at Robert Morris University's Charles L. Sewall Center, 6001 University Blvd. in Moon Township.Hours will be 10 a.m. to 6 p.m. Friday and Saturday and 10 a.m. to 3 p.m. Sunday.Admission and parking are free, as are appraisals.The show will include coins, paper money, gold, silver, platinum, bullion, tokens, medals, proof sets and mint products.For more information, call 814-535-5766.

CALIFORNIA, Pa. — The Three Rivers Saxophone Quartet from Pittsburgh will have its 19th annual saxophone and woodwind workshop June 22 to 26 at California (Pa.) University.Scheduled performances include the 'Burgh Big Band at 7 p.m. June 25 in Morgan Hall on campus. A free recital will take place in Gallagher Music Hall at 7 p.m. each evening of the workshop.Call 412-306-0498 for more information.

SLIPPERY ROCK — Watermelon Wednesdays return to Slippery Rock Park this summer with concerts Wednesdays in July.The shows take place from 6:30 to 8:30 p.m. Music and watermelon are free.The schedule is:• Chuck Moses, July 1• Chris Buhler, Rich Warham and Nyomin, July 8• Rock Falls — The Freedom Express, July 15• 16 Eyes, classic rock and blues, July 22• Well Strung, bluegrass, July 29.For more information, call 724-794-8180.