Three exhibits -- The Artwork of Troy Boswell, works by students of CreatIT, and The Turning Point of World War II, a tribute to Memorial Day by the Sonoran Desert Model Builders -- close Friday, May 31. Hours are 9 a.m. to 8 p.m., Monday through Wednesday; 9 a.m. to 6 p.m., Thursday; 9 a.m. to 5 p.m., Friday; 10 a.m. to 5 p.m., Saturday; and 1 to 5 p.m., Sunday; free. Call 791-4010, or email askalibrarian@pima.gov for more information.