History: Submarine Pioneer John Paul Holland sitting in an early submarine. [ca. 1900](400x667)

https://upload.wikimedia.org/wikipedia/commons/d/db/JohnPhilipHolland.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/5lgfio/submarine_pioneer_john_paul_holland_sitting_in_an/?utm_source=ifttt