ewis Hine was born in Oshkosh, Wisconsin, in 1874. He moved to New York City in 1901 to teach at the Ethical Culture School. There Hine used photographs as educational tools, and soon began to photograph immigrants at Ellis Island. He hoped his photographs would encourage people to "exert the force to right wrongs."

While continuing to teach at ECS, Hine began to do freelance work for the National Child Labor Committee, an association that transformed his professional life.

In 1908, the NCLC provided Hine a monthly salary to photographically document children in factories, mills, canneries, textile mills, street trades, and agricultural industries. Through his photographs he sought to alert the public to the extent of child labor in America, and the degree to which it denied these children their childhood, health, and education. In one year, Hine covered 12,000 miles in his quest to end abusive child labor. By 1913, Hine was considered the leading social welfare photographer in America.

Hine enjoyed a long and successful career following his work for the NCLC. He worked for the American Red Cross (1917-20), photographing refugees and civilians in war-torn Europe, a new series of photographs of immigrants at Ellis Island (1926), a series of photographs documenting the construction of the Empire State Building (1930), photographs of drought-ridden communities in Arkansas and Kentucky (1931), as well as work for the Tennessee Valley Authority.

In 1936-37 Hine was appointed head photographer for the National Research Project of the Works Progress Administration. The aging Hine, however, was disappointed at the rebuff of his attempts to secure work with the Farm Services Administration, where director Roy Stryker considered Hine old fashioned and difficult. Lewis Hine died in 1940, shortly before a resurgence of public interest in his work raised him to the highest level of American photographers.