This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
The History of Labor in America Series at the Frances Perkins Federal Building LCCN.tif photograph digital file color Notes Forms part of the Carol Highsmith Archive Title information date and subject note provided by the photographer Credit line Photographs in the Carol Highsmith Archive Library of Congress Prints and Photographs