Children doing outdoor exercises at the Mont Alto Sanatorium for tuberculosis, Pennsylvania: the children are stripped to the waist and some show the effects of heliotherapy on their skin. Photograph, 1920/1940?
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In the children's summer camp at Mont Alto Sanatorium. Note the exposure to the sun - heliotherapy
1 photograph : photoprint ; image 8.2 x 14.1 cm
Wellcome Library no. 582393i