of Lincoln taken on the same February day by Mathew Brady
, used for the redesigned $5 bills from 1999 onwards. Note that this image is a mirror of Lincoln as he appears on the bill - this is because the daguerreotype process produced a single positive image (rather than a negative
made on film
, which is then used to make a true photographic positive
), and the daguerreotype was always a mirror image of the subject material. Thus, the way Lincoln appears on the bill is actually how he appeared when seated for the picture.