click it ↑ and use the history slider to find the Photographers and Photographs
They say: ‘Photogrammar is a web-based platform for organizing, searching, and visualizing the 170,000 photographs from 1935 to 1945 created by the United States Farm Security Administration and Office of War Information (FSA-OWI).
NB: most images are public domain – but check here for the repro licence.