UNITED STATES - APRIL 16: The picture shows members of a derrick gang fixing a beam during the construction of the Empire State Building, showing the streets of New York far below them. Lewis Wickes Hine (1874-1940) used photography as a documentary tool to inspire social reform: his subjects included child labour, the immigrants of Ellis Island and construction workers in industry, railways and building. They reveal both the horror of exploitation and the dignity of work. (Photo by SSPL/Getty Images)
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SSPL Science & Society Picture Library