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<ul><li><b>Scope and content:</b>  The US Army Corps of Engineers extensively photographed many of the Civil Works project and river and harbor improvement that they were involved with. The Corps was responsible for maintaing navigability on area rivers and in area harbors.</li></ul></div>
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Unknown author<span style="display: none;">Unknown author</span> or not provided</div>
<a href="https://en.wikipedia.org/wiki/U.S._National_Archives_and_Records_Administration" class="extiw" title="en:U.S. National Archives and Records Administration">U.S. National Archives and Records Administration</a>