These photographs are part of the daguerreotype collection from The Library of Congress. They date back to 1839-1864 and are in the public domain. There is a huge online collection that I have spent hours going through, and these are just a few of the amazing photos you can find there. (http://memory.loc.gov/ammem/daghtml/daghome.html)
Check out my Etsy store for collage sheets made from daguerreotype photographs.