Lewis W. Hine (1874–1940, United States) was an American photographer and sociologist whose work played a crucial role in the development of documentary photography and social reform. He is best known for his powerful images of child labor in the early 20th century.

Working for the National Child Labor Committee, Hine documented children working in factories, mines, and mills across the United States. His photographs were instrumental in raising public awareness and contributed directly to changes in labor laws.

In addition to his social documentary work, Hine also produced iconic images of workers constructing the Empire State Building, celebrating human labor and dignity. His approach combined factual documentation with a strong ethical and humanistic vision.

For collectors, Hine’s work is highly valued for its historical importance, social impact, and foundational role in documentary photography.