Engraving of two firemen at work, from the book "Industrial history of the United States, from the earliest settlements to the present time" by Albert Sidney Bolles, 1878. Courtesy Internet Archive. Note: Image has been digitally colorized using a modern process. Colors may not be period-accurate. ()This image was created from the Internet Archive Books Images project (https://www.flickr.com/photos/internetarchivebookimages/) through a collaboration between the Internet Archive and Gado Images. The descriptions and keywords from this image were created by Gado Images' professional research team.