Captain Abraham Lincoln around the time he served in the Illinois militia during the Black Hawk War.
Nicholas H. Shepherd, Springfield, IL, based on the <a rel="nofollow" class="external text" href="https://archive.org/stream/myrecollectionso00harr#page/n0/mode/2up">recollections of Gibson W. Harris</a>.
From old daguerreotype. Via  <a rel="nofollow" class="external autonumber" href="http://lincoln.lib.niu.edu/fimage/blackhawk/bhw2.php?id=739">[1]</a>