Daguerreotype
Invented by Louis-Jacques-Mandé Daguerre and introduced worldwide in 1839, daguerreotype was almost completely superseded by 1860 with new, less expensive processes yielding more readily viewable images. In the late 20th century, there was a revival of daguerreotypy by a small number of photographers interested in making artistic use of early photographic processes.
John Jabez Edwin Mayall
In an interview with the editor of the Photographic News, Mayall stated that his "first handling a Daguerreotype was on 6 January 1840", two years before he embarked for America.