Sarah Greenough, senior curator of photographs, National Gallery of Art. Since the first Kodak camera was sold in 1888, American amateur photographers have taken billions of snapshots. In this Backstory episode, curator Sarah Greenough and host Barbara Tempchin discuss how anonymous photographers experimented with the medium, creating artfully crafted images. They also talk about the exhibition The Art of the American Snapshot, 1888-1978: From the Collection of Robert E. Jackson.