Imagine working in a coal mine.
Or in a steel mill.
Or at a telephone switchboard.

Work and workplaces have gone through enormous transformations between the mid 19th and late 20th centuries. You can view these changes through photographs held by the National Archives and Records Administration.

These historical photographs document:

The distinctiveness of America's workforce was shaped by many factors—immigration and ethnicity, slavery and racial segregation, wage labor and technology, gender roles, class, as well as ideals of freedom and equality.

Most importantly, these images honor those who built this country—the working men and women of America.