Wikipedia - Mark Twain and Nikola Tesla in the spring of 1894. The close friends spent a lot of time together in Tesla's lab and elsewhere. Twain notably described Tesla's induction motor
Nikola Tesla - Wikipedia
Tesla - Wikipedia, the free encyclopedia - Nikola Tesla Tesla c. 1890 Born 10 July 1856 Smiljan, - Studocu
File:Nikola Tesla by Sarony c1885-crop.png - Wikipedia