"Housed at the Library of Congress, the archives of the Farm Security Administration constitute an essential visual record of American life from the late 1920s through the onset of the Second World War. Guided by the adroit hands and watchful eyes of the master photo editor Roy Stryker, the FSA archive includes the work of dozens of photographers, from acknowledged giants like Walker Evans, Ben Shahn, and Dorothea Lange to Marion Post Wolcott and...