Men In Tights (and Skirts, Lipstick and Rouge): 100 Years of the Michigan Union Opera is a celebration of the opera's centennial through photographs, sketches, musical scores and other historical documents. The exhibit, through May 31, is on display from 9 a.m.-5 p.m. Monday through Friday and 9 a.m.-12:30 p.m. Saturdays at the Bentley Historical Library, 1150 Beal Ave., 764-3482, bentley.umich.edu/. (Photo courtesy the Bentley Historical Library)