Not one but two area museums are offering exhibits focused on the work of Andy Warhol. The Hirshhorn presents "Andy Warhol: Shadows 1978," comprising 102 silkscreened and hand-painted canvases featuring distorted photographs of shadows generated in the famed PopArt artist's studio. Meanwhile, the National Gallery of Art presents "Warhol: Headlines," offering works that the famed gay artist created largely on ... [Read]