This source shows children working in a factory. It talks about how child labor attracts was attractive to business owners, and the number of children working increased in the final quarter of the 19th century.
Child labor in Factories During the Industrial Revolution
The History Place - Child Labor in America 1908-12: Lewis Hine Photos - The Mill. Kids worked in factories or mills first in England and then in America. The working conditions were extremely injurious to the kid's health. Many died as a result of illnesses acquired at the workplace and accidents that occurred on a regular basis.
Youngsters at Bibb Mill No. 1, 1909- Heart-Breaking Pictures of Child Labour In USA by Lewis Hine in early 1900s America. This photo series, archived by the Library of Congress, shows what conditions were like for child laborers before child labor was largely eliminated in 1938.