Elmer Lucille Allen, Sandra Charles and Barbara Tyson Mosley are friends. And as friends are wont to do, they plan to do things together. Since they’re artists, that means a joint exhibition of their work. Allen, a textile artist and ceramicist, is displaying her cotton and silk shibori wall hangings composed of geometric patterns. Charles is a former textile artist who once worked in batik but now specializes in portrait paintings of African-American women. Also a fiber artist, Mosley is an abstract painter of landscapes and seascapes. The public opening reception is Feb. 22 from 6 to 8 p.m., with a Carnegie Center members-only curator’s talk with the artists at 5:30 p.m.