Tom Murphy, San Francisco, 1948 gelatin silver print The Minor White Archive, Princeton University Art Museum hide caption

itoggle caption The Minor White Archive, Princeton University Art Museum

Zhang Kechun. Under the Abandoned Pier, 2013-2014. Zhang, 34, spent years shooting photos along the Yellow River. Zhang Kechun/Courtesy of Three Shadows +3 Gallery hide caption

itoggle caption Zhang Kechun/Courtesy of Three Shadows +3 Gallery

James Lee often has to pick up his 100-pound son, Justin. Photographer Andrew Nixon shot this photo in an effort to show how being caregivers affects the aging parents. Andrew Nixon/Capital Public Radio hide caption

itoggle caption Andrew Nixon/Capital Public Radio