Image: Turtle submarine 1776
Description: Diagram of David Bushnell's Turtle submarine
Title: Turtle submarine 1776
Credit: "A History of Sea Power" By William Oliver Stevens, Allan Westcott, Allan Ferguson Westcott Published by G. H. Doran company, 1920, pg. 294 [1] Originally uploaded to EN Wikipedia as en:File:Turtle submarine 1776.jpg by en:User:Swampyank 06:37, 20 February 2009 (UTC)
Author: William Oliver Stevens
Permission: Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Turtle_submarine_1776.jpg
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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