80-G-707438:  Deep Sea Diving School, Naval Gun Factory, Washington, D.C. Another phase of training is that of familiarizing students in the proper use of the submarine rescue bell similar to the device used to rescue the survivors of the submarine USS Squalus (SS 192) in 1939.  This training pays off in the greatest of dividends, human lives, released February 3, 1950.     U.S. Navy Photograph, now in the collections of the National Archives.  (2016/06/14).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/127906254@N06">National Museum of the U.S. Navy</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/127906254@N06/27065926353/">80-G-707438</a>