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Reference.org
Libre Map Project
open-in-new
<p>The Libre Map Project is an online collection of all digital <a href="/facts/USGS/nVaGtMjl">USGS</a> 1:24K scale <a href="/facts/Topographic_maps/sUxP398u">topographic maps</a> (as well as various other GIS data) covering the United States, available as a free download. </p>