Lange's "Migrant Mother" is one of her most famous photographs. Dorothea Lange/Courtesy of the Library of Congress hide caption

itoggle caption Dorothea Lange/Courtesy of the Library of Congress

Buddha and his attendants stay zen at the bustling Virgin America ticket counter in the International Terminal at SFO. They are part of The Resplendent Stone, an exhibit of Chinese jade pieces on loan from the Asian Art Museum of San Francisco. Beth Novey/NPR hide caption

itoggle caption Beth Novey/NPR

Boy with raisin bread, photograph for the cover of McCall's Homemaking Magazine, ca. 1944 Nickolas Muray/Courtesy of the National Museum of American History Photographic History Collection hide caption

itoggle caption Nickolas Muray/Courtesy of the National Museum of American History Photographic History Collection