In 1908 Hine became the photographer for the National Child Labor Committee (NCLC), leaving his teaching position. Over the next decade, Hine documented child labor, with focus on the use of child labor in the Carolina Piedmont,[3] to aid the NCLC's lobbying efforts to end the practice.[4] In 1913 he documented child laborers among cotton mill workers with a series of Francis Galton's composite portraits.