The map covers all of Washington D.C. as well as <a href="https://en.wikipedia.org/wiki/Georgetown,_Washington,_D.C." class="extiw" title="en:Georgetown, Washington, D.C.">Georgetown</a>, then a separate city. It shows block numbers, wards, built-up areas, and major buildings. Produced by Lloyd Van Derveer, publisher, Camden, New Jersey.
<bdi><a href="https://www.wikidata.org/wiki/Q26846548" class="extiw" title="d:Q26846548"><span title="publisher, New Jersey county atlas maps">Lloyd Van Derveer</span></a>
</bdi>
1851<div style="display: none;">date QS:P571,+1851-00-00T00:00:00Z/9</div>
This map  is available from the United States <a href="//commons.wikimedia.org/wiki/Library_of_Congress" title="Library of Congress">Library of Congress</a>'s <a rel="nofollow" class="external text" href="//www.loc.gov/rr/geogmap/">Geography &amp; Map Division</a><br> under the digital ID <a rel="nofollow" class="external text" href="http://hdl.loc.gov/loc.gmd/g3850.ct000745">g3850.ct000745</a>.<br><small>This tag does not indicate the copyright status of the attached work. <span style="white-space:nowrap">A normal <a href="//commons.wikimedia.org/wiki/Special:MyLanguage/Commons:Copyright_tags" title="Special:MyLanguage/Commons:Copyright tags">copyright tag</a> is still required.</span> <span style="white-space:nowrap">See <a href="//commons.wikimedia.org/wiki/Special:MyLanguage/Commons:Licensing" title="Special:MyLanguage/Commons:Licensing">Commons:Licensing</a>.</span></small>