Union 300-pounder <a href="https://en.wikipedia.org/wiki/Parrott_rifle" class="extiw" title="en:Parrott rifle">Parrott rifle</a> with a ruptured barrel in Battery Strong on Morris Island.
Unknown author<span style="display: none;">Unknown author</span>
<ul><li><i><a rel="nofollow" class="external text" href="https://archive.org/stream/photographichist05mill#page/111/mode/1up">The Photographic History of The Civil War in Ten Volumes: Volume Five, Forts and Artillery</a></i>. The Review of Reviews Co., New York. 1911. p. 111.</li></ul>