Guild Hall will open two exhibitions this week to inaugurate the museum’s fall season, each lively and provocative in its own way. In one gallery, Thomas Moran’s stylistic legacy and his preoccupation with European art movements will be examined in “Tracing Moran’s Romanticism and Symbolism.” In the other, Christa Maiwald will offer “Short Stories and Other Embroideries.” Ms. Maiwald was the winner of the 2011 members exhibition.