An albumen print of the Patio Process at the Gould &amp; Curry Mill
Lawrence &amp; Houseworth, publisher
1866
Library of Congress, Lawrence &amp; Houseworth, publisher.  The Patio Process--Gould &amp; Curry Mill, JPG, <a rel="nofollow" class="external free" href="https://www.loc.gov/pictures/resource/cph.3a28410/">https://www.loc.gov/pictures/resource/cph.3a28410/</a>