The National Atlas of the United States was an atlas published by the United States Department of the Interior. Older editions were printed, but the most recent edition was available online. Since it is a publication of the United States government, the atlas and the maps contained therein remain in the public domain.
According to the U.S. National Atlas website, this atlas "provided a comprehensive, maplike view into the enormous wealth of geospatial and geostatistical data collected for the United States."  Its purpose was also to increase "geographic knowledge and understanding and to foster national self-awareness."  Information used to develop the National Atlas of the United States was also used in conjunction with Canadian and Mexican information to produce continental-scale tools such as the North American Environmental Atlas.
The online National Atlas of the United States contained thousands of printable maps, fully documented digital cartographic datasets, wall maps, Web map and features services that complied with Open Geospatial Consortium standards, wall maps, multimedia dynamic maps, and innovative mapping applications.
In late 2013, mapping managers at the U.S. Geological Survey decided to end the program despite the fact that nationalatlas.gov received three times the use of its other mapping service nationalmap.gov.  The demise of the National Atlas was announced in February 2014 and nationalatlas.gov was taken offline on October 1, 2014.
Since the Atlas' retirement, its data remains available in two places:
- Data published in the National Atlas is archived as 1997-2014 Edition of The National Atlas of the United States  on the U.S. government's  website.
- The U.S. Geological Survey continues to make at least a subset of the National Atlas data available under its National Map Small Scale Collection.  A few of the datasets have been updated since the Atlas retired.
The first national atlas of the United States, titled the Statistical Atlas of the United States Based on the Results of the Ninth Census 1870, was published in 1874.  Francis A. Walker, the Superintendent of the 1870 U.S. Census compiled this atlas "with contributions from many eminent men of science and several departments of the government."  The 1874 U.S. National Atlas contained population maps as well as economic and natural resources maps (including maps of forests, precious metals, coal, climate, and crops). 
Henry Gannett, who worked as the Chief Geographer of both the U.S. Census Bureau and the U.S. Geological Survey (USGS), led the production of three additional national atlases of the United States after 1874, with the last of these atlases being published in 1920. 
The next edition of the national atlas of the United States was issued in 1970—half a century later.  The USGS and its chief geographer Dr. Arch C. Gerlach oversaw the preparation and production (which took several years to complete) of the 1970 U.S. National Atlas as well.   The 1970 atlas weighed twelve pounds, contained four hundred pages, and had a collection of 765 maps.  These maps showed "scientific information from a variety of Federal sources and depicted the principal characteristics of the country, including its physical features, historical evolution, economic activities, sociocultural conditions, administrative subdivisions, and place in world affairs." 
The 1970 atlas was primarily created for use by United States government officials, researchers, and others who need "to visualize country-wide patterns and relationships between environmental phenomena and human activities".  15,000 copies of the 1970 atlas were printed, and its price of US$100 (equivalent to $645 in 2018) made it cost-prohibitive for most Americans.  A majority of those 15,000 copies were bought by schools and libraries.  The 1970 atlas has been out of print since the early 1970s, but the Library of Congress posted it online as part of its American Memory collection.  The 1970 National Atlas of the United States of America  page describes the development of this atlas briefly and gives a link to the Library of Congress archive. 
The final National Atlas of the United States was created in 1997 and was published online through the first nine months of 2014.  The USGS led the creation of this edition of the National Atlas, but more than twenty U.S. federal agencies cooperated in producing it. Its varied products and services included the first online interactive mapping program offered by the Federal government. 
The U.S. Geological Survey continues to make at least a subset of the National Atlas data available under its National Map Small Scale Collection.  The USGS has updated a handful of the Atlas datasets on its pages since the Atlas retired. The USGS groups the datasets it hosts into six "chapters" as follows:
- Land Cover: Impervious Surface, Land Cover, Tree Canopy
- Governmental Units/Boundaries: Congressional Districts, Counties, Federal lands, States...
- Elevation: Contours, Elevation, Natural Earth, Satellite View, Shaded Relief...
- Geographic Names/Map Reference: Cities and Towns, Coastline, Urban Areas...
- Transportation: Airports, Parkways and Scenic Rivers, Railroads, Roads...
- Water: Dams, Networked Hydrography, Gaging Stations, Streams and Waterbodies...
- The National Atlas of the United States of America (2013-01-14). "Learn about the National Atlas". Nationalatlas.gov. Archived from the original on 2013-05-26. Retrieved 2013-05-30.
- "The National Map". nationalmap.gov.
- "1997-2014 Edition of The National Atlas of the United States - Data.gov". catalog.data.gov.
- "Data.gov". Data.gov.
- America, The National Atlas of the United States of. "The National Map: Small Scale". nationalmap.gov.
- "Capital Footnotes", Daily News, p. 34, December 12, 1967, retrieved June 1, 2013
- "About this Collection - General Maps".
- "Title page". Library of congress.
|Wikimedia Commons has media related to National Atlas of the United States.|
- 1997-2014 Edition of The National Atlas of the United States – National Atlas data archive at data.gov.
- About the National Atlas – associated with the 1997-2014 archive on www.data.gov.
- Statistical Atlas of the United States Based on the Results of the Ninth Census 1870 – the "1874 edition" published by the U.S. Dept of the Interior, printed by Julius Bien, on the Library of Congress website. (Note: LOC presents this document as the 1870 edition.)
- Scribner's Statistical Atlas of the United States – the "1880 edition" published and copyright 1883 by Charles Scribner's Sons, on the Library of Congress website.
- Statistical Atlas of the United States Based Upon the Results of the Eleventh Census – the "1890 edition" published by the U.S. Dept of the Interior, on the Library of Congress website.
- Statistical Atlas, 1900 — the "1900 edition" of the Statistical Atlas on FRASER
- Statistical Atlas of the United States, 1910 — the "1910 edition" of the Statistical Atlas on FRASER
- Statistical Atlas of the United States, 1920 — the "1920 edition" of the Statistical Atlas on FRASER
- The National Atlas of the United States of America – the "1970 edition" published by the U.S. Dept of the Interior, on the Library of Congress website.
- Census Atlas of the United States — the "2000 edition" on FRASER