View of a 76 mm/50 gun mount aboard the U.S. Navy heavy cruiser USS <i>Salem</i> (CA-139).
U.S. Navy
U.S. Navy photo <a rel="nofollow" class="external autonumber" href="http://www.navysite.de/cruisebooks/ca139-53/008.htm">[1]</a> from the <a rel="nofollow" class="external text" href="http://www.navysite.de/cruisebooks/ca139-53/index_004.htm">USS <i>Salem</i> (CA-139) 1953 cruise book</a> available at <a rel="nofollow" class="external text" href="http://navysite.de/cruisebooks/index.html">Navysite.de</a>