Nikola Tesla People Relatives, friends and associates of Nikola Tesla Frederic P. Stevens Mr. Stevens was the proprietor of The Stevens Fotograferie. Mr. Stevens is listed as an enemy because Tesla was none too happy with his services. This is evidenced by this letter from Tesla to Robert Underwood Johnson, publisher of the Century magazine. Related contentNovember 28th, 1899 letter from Nikola Tesla to Robert Underwood Johnson Pagination Enjoy other profiles First First item Previous Previous item Next Next item Last Last item Within the Universe Books Books written by and about Nikola Tesla. Quotes Profound and insightful quotes by Nikola Tesla. Patents Nikola Tesla held around 200 patents worldwide. Timeline Important moments and events related to Tesla. Articles Nikola Tesla in the press. Images Nikola Tesla image and photo library. Landmarks Locations related to Nikola Tesla. Letters Letters to, from and about Nikola Tesla. Movies and TV Nikola Tesla on the screen.