Photography
Alexander Hesler or Hessler (July 12, 1823 – July 5, 1895) was a Canadian American photographer active in the U.S. state of Illinois. He is best known for photographing, in 1858 and 1860, definitive iconic images of the beardless Abraham Lincoln.
Guerrillero Heroico.
History of photographic lens design.
Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.