History: Mark Twain in Nikola Tesla’s Lab holding Tesla's experimental vacuum lamp in Spring 1894. The figure in the background is Tesla himself. [727 x 487]

https://i.redd.it/j8ybrux1qag11.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/97kh3d/mark_twain_in_nikola_teslas_lab_holding_teslas/?utm_source=ifttt