The Prints and Photographs Online Catalog (PPOC) contains catalog records and digital images representing a rich cross-section of still pictures held by the Prints & Photographs Division and, in some cases, other units of the Library of Congress. The Library of Congress offers broad public access to these materials as a contribution to education and scholarship.
The collections of the Prints and Photographs Division include photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings. While international in scope, the collections are particularly rich in materials produced in, or documenting the history of, the United States and the lives, interests and achievements of the American people.
If you have an interest in history, photography, or are just curious about how we developed as a nation, then this is the site for you. The collections have thumbnails and offer several different download quality options up to the TIFF which will open in Photoshop. The content is incredible from stark images of the civil war to the war years and education, industry, life in general, and entertainment. There are black and white as well as color images. Each photo has the history of the photo and identification and most important, whether or not it is public domain or has publishing restrictions. So, the responsibility for checking ownership is up to the person using it for commercial purposes. Prepare to be dazzled and the link is here. Below is one of the images from 1940 in Melrose, Louisiana. It is a Bar, Store, and Juke Joint. Enjoy!