Medicine show

Medicine show, Huntingdon, Tennessee.
Photographer: Ben Shahn

Wikipedia:

Fortunately, in 1935, Shahn was recommended by Walker Evans, a friend and former roommate, to Roy Stryker to join the photographic group at the Farm Security Administration (FSA). As a member of the FSA group, Shahn traveled and documented the American south alongside Walker Evans, Dorothea Lange and other photographers. Like his earlier photography of New York City, Shahn’s FSA work can be viewed as social-documentary.

Prints and Photographs Reading Room, Library of Congress