Greensburg -- The Westmoreland Museum of American Art, 221 N. Main St., will hold a gallery tour of "Pennsylvania's Native Landscape" at 7 p.m. next Thursday as part of its Thursday Evenings at the Westmoreland series. Call 724-837-1500, ext. 10.

Monroeville -- Monroeville Public Library, 400 Gateway Campus Blvd., will host an exhibit of photography by Barbara Hall from tomorrow through Dec. 27 in the gallery space. Call 412-372-0500.

Greensburg -- The Westmoreland Museum of American Art, 221 N. Main St., will present a class, Cool Landscape Collage, for children ages 7 through 10 from 10 a.m. to noon and from 12:30 to 2:30 p.m. Dec. 13 as part of its Second Saturday Studio series. The cost is $12. Registration is required. Call 724-837-1500, ext. 10.

Greensburg -- The River City Brass Band will perform "And the Angels Sing" at 8 p.m. Saturday at the Palace Theatre, 21 W. Otterman St. Tickets costs $22, $24 and $29; $2 discount for seniors and students. High school choral groups also will perform. Call 1-800-292-7222.

Hempfield -- The University of Pittsburgh at Greensburg, 108 Powers Lane, will host a poetry reading by Heather McNaugher at 7 tonight in the coffeehouse in Village Hall. It is free and is part of the school's monthly Written/Spoken series. For more information, contact Jess Swiokla at 814-270-0581 or jas171@pitt.edu.

Irwin -- The Norwin Chamber of Commerce, 321 Main St., will hold a business holiday mixer from 5 to 7 p.m. Wednesday. Call 724-863-0888.

Hempfield -- Greensburg Central Catholic High School, 911 Armory Drive, will have an open house from 3 to 5 p.m. Dec. 14 for sixth-, seventh- and eighth-graders and their families, and for current high school students who are considering enrollment. There will be a tour of facilities and faculty, students and coaches will be available. For more information, call 724-834-0310 or go to visit www.gcchs.org.

Murrysville -- Energy Swing Windows, 3245 Miracle Drive, will have a Winter Wonderland open house from 9 a.m. to 3 p.m. Saturday. Consultants will assist customers with window and door questions or needs, and events will include breakfast and pictures with Santa and sales that will benefit charities. Unused toys or games, unwrapped, are sought for the Toys for Tots Toy Run. For more information, call 724-387-2991 or send an e-mail to Ashley@energyswingwindows.com.

Derry Township -- The state Department of Conservation and Natural Resources will hold a nature scavenger hunt from 1 to 3 p.m. Saturday on the Stone Lodge Trail in Keystone State Park, 1150 Keystone Park Road. Call 724-668-2566.

Unity -- Saint Vincent College, 300 Fraser Purchase Road, will hold a program, "Native American Myths and Legends," from noon to 2 p.m. Saturday at its Winnie Palmer Nature Reserve. Presenter is Michael Muchnock. Call 724-537-5284.

Greensburg -- The Westmoreland Trust will present the following productions at the Palace Theatre, 21 W. Otterman St.. Call 724-836-8000.

• Smothers Brothers Christmas Show, 2 and 8 p.m. tomorrow. Tickets: $40, $50, $60, $65 and $75.

• "A Christmas Carol," 2 and 7 p.m. Sunday. Tickets: $15 and $20, $5 discount for students. Presented by Stage Right!.