In “Fort Gotham Girls + Boys Club,” Brad Kahlhamer explores his Native American heritage in some of the most evocative paintings, sculptures and works on paper he has produced to date. His unusual approach combines elements of graffiti and other pop-culture references with familiar Native American imagery. One wall is covered with drawings and watercolors, including a number of portraits that convey a psychological intensity. In Super Catcher, a large ceiling-hung sculpture 10 feet in diameter, Kahlhamer uses the dream catcher motif, transforming it into an elaborate circular mesh construction. One of the best works is an imaginative series of objects inspired by Hopi Katsina dolls.