“Fifi” is one of the old-time performance artists painted by the prolific David C. “Snap” Wyatt, whose sideshow banners are featured in a current exhibit at Carl Hammer Gallery. Wyatt, who boasted that he could turn out one of these huge canvases (typically 10 by 12 feet) in seven hours, became known as the nation’s preeminent banner painter; Riverview Park, which had a huge sideshow, displayed only his work. Banners including those celebrating Sweet Marie’s eating disorder and the Alligator Girl’s acne, as well as Fifi’s talent for carrying her head around on a plate, will be hung at two locations through December 10: Hammer’s gallery at 200 W. Superior, open 10 to 6 Tuesday, Wednesday, and Friday, 10 to 7 Thursday, and 10 to 5:30 Saturday; and a third floor gallery at 1800 N. Clybourn, whose hours are noon to 8 daily. Call 266-8512 for more information.