Few painters have created images as popular and as intertwined with American culture as Norman Rockwell. For decades, Rockwell produced magazine covers for the Saturday Evening Post – illustrations which are folksy, nostalgic and idealized versions of the county. And even if you don’t know anything about Rockwell, there’s a good chance you’d recognize his work. Those covers and other items go on display Sunday at the Birmingham Museum of Art. We sent WBHM’s Andrew Yeager there to get a preview.