"The Thunder Mountain Twirlers are having a Square Dance on Friday, September 12th from 7:30 to 9:30 . Tom Crisp will call Mainstream, with a Plus Tip after the dance, and Lisa Wall will cue Rounds between Tips. Review runs from 6:45 to 7:30 . Only $4 for members, $5 for non-members, and FREE for non-dancers to come watch and socialize! Snacks and friendship are provided. Sierra Lutheran Church Fellowship Hall, 101 North Lenzner, Sierra Vista. For more info contact Sandy at 520-378-6719 or email svtmt@cox.net .

Thursday is Taco Night American Legion Post 52 sponsors Taco Night, every Thursday, 4 – 7 p.m., at American Legion Post 52, 12 Theater Dr., Sierra Vista. Members, guests and active duty service members and Families are invited.  For more information, call 520.459.6050.

Enjoy bingo twice a week The Veterans of Foreign Wars Post 9972 hold bingo at 12:30 p.m. Saturday and 5:30 p.m. Monday at 549 Veterans Dr., Sierra Vista. Bingo is open to the public. For more information, call 520.458.9972.

Horse around while helping others Love horses? CANTER needs horse handlers and side walkers to support its therapeutic riding program for children and adults with disabilities. No previous horse experience is necessary. CANTER operates Tuesday, Wednesday, Thursday and Saturday mornings at 7388 Chief Joseph Rd. off Moson Road.  For more information, call 520.459.4868, or go to www.canteraz.org .

Steward Observatory Mirror Lab Tours Take a 90-minute tour providing a unique opportunity to learn how innovative engineering and optical technology melds with manufacturing techniques to produce the largest and most advanced giant (8.4 meters/27 feet) telescope mirrors in the world. Visitors will see the technology and revolutionary processes involved in making the next generation of telescopes that will explore deep into outer space and produce cutting-edge scientific research. Tours occur daily; visit www.mirrorlab.tix.com to purchase tour tickets. Admission is $15 for adults, $8 students, 7 – 22. Contact 520.626.8792 for details or www.mirrorlab.as.arizona.edu .

Mineral museum features ‘Best of Best’ The University of Arizona Mineral Museum's "Best of the Best" exhibit features many of the most exquisite minerals from the most admired collections in the state. The exhibit also brings together the stories behind the minerals — the search, the discovery, the history and the awe-inspiring science — that makes these specimens come to life.  The UA Mineral Museum is open daily and is located on the main floor of Flandrau Science Center and Planetarium. The exhibit is open through Dec. 30 with free admission to children under 4, children 4 – 15 are $5, Adults are $7, students with an ID are $4, seniors and military are $6.  For more information, call 520.621.4227.  

Bisbee Muheim Heritage House The Muheim Heritage House Museum , a registered national historic site, was built by Joseph and Carmelita Muheim beginning in 1898 and was completed in 1915. Located at 207 Youngblood Hill, the restored home is an example of late 19th century architecture. Visitors can take a guided tour through the restored interior with its period furnishings. This pioneer home, situated on a hill, offers a panoramic view of Old Bisbee. The museum is open daily from 10 a.m. – 2 p.m. or by appointment. Admission is $4.  For more information, call 520.432.7698.