More to explore:
Mark Twain in the lab of Nikola Tesla, spring of 1894.
Mark Twain: 15 years old
© Walter G. Chase, 1896, Portrait of Mark Twain
Real Photo Postcard: 1917 Bill & Wisdow [?] O'Neal.
A diagram showing what the position of a "mouche" or beauty mark signified in the 18th century.
a hop garden in kent (circa 1940)
First Australasian Antarctic Expedition, 1911-1914 by Frank Hurley
Shoemaker Inside the Glass Window in Harvard Square by Bimal Nepal