Image: John Penn
John_Penn.jpg (429 × 571 pixels, file size: 129 KB, MIME type: image/jpeg)
Description: John Penn (1805–1878) was a mechanical engineer known for marine engines.
Title: John Penn
Credit: https://books.google.com/books?id=G-s8AQAAIAAJ&dq=John%20Penn%20steam%20engine&pg=PA2395#v=onepage&q&f=false
Author: Scientific American, Munn and Co., 1878
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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