Tesla circa 1890 - A black and white photo of a man with a mustache

Nikola Tesla (1856–1943) Serbian American inventor and engineer who discovered and patented the rotating magnetic field, the basis of most alternating-current machinery. He also developed the three-phase system of electric power transmission. He immigrated to the United States in 1884 and sold the patent rights to his system of alternating-current dynamos, transformers, and motors to George Westinghouse.

Napoleon Sarony (1821-1896) was a Canadian-American lithographer and photographer known for his portraits of famous people, including politicians, actors and other celebrities. Born in Quebec, Canada, he moved to New York City in the 1840s to pursue a career in lithography. He later switched to photography and opened his own studio in 1866. Sarony's portraits were noted for their theatricality and elaborate costumes, and he became one of the most sought-after photographers of his time. His most famous subjects included Oscar Wilde, Mark Twain and Buffalo Bill Cody. Sarony's legacy continues today, with many of his photographs considered iconic representations of their subjects.