Shorpy Higginbotham was the subject of a series of photographs by an American sociologist and photographer who used his camera as a tool for what?
Shorpy Higginbotham:  Higginbotham was the subject of a series of photographs by Lewis Hine that showed the child working in the dangerous environment of a coal mine. Lewis Hine:  Hine used his camera as a tool for social reform.
i don't know