Sutter's Mill, 1850 — The caption with this photo at the Library of Congress claims that this was Marshall in front of the mill in 1850. However, it was not. The historians at Marshall Gold State Historic Park have concluded that it is not Marshall and believe it to be the photographer's assistant put in the photo to show scale.
Photo Credit: By R. H. Vance - Public Domain, https://commons.wikimedia.org/w/index.php?curid=439399