George Wittenberg, the Little Rock artist who paints watercolors and has them franked with stamps from the painting's locale (clever!), has two pieces on exhibit now at the Maryland Federation of Arts in Annapolis. "Cententerio, Buenos Aires" and "Pont du Gard" (painted in Arles, France), both 7-by-10 inches, are in the MFA's "Small Wonders" exhibit. You can see more of Wittenberg's Postcard Art here, including 15 watercolor postcards of significant places in Little Rock. The show runs through Dec. 28, if you happen to get up to Annapolis.