Photo taken of damage from a massive explosion near <a href="https://en.wikipedia.org/wiki/Ulysses_S._Grant" class="extiw" title="en:Ulysses S. Grant">Ulysses S. Grant</a>'s headquarters at City Point on August 9, 1864. A barge blew up killing about 70 men and wounding 130 while destroying warehouses and wharf.
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/187/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. 187.</li></ul>