Library of Congress, Washington D.C.:
- On site: Geography and Map Reading Room.
- Online: LOC Collections with Maps.
Search maps by format, year, date and location.
National Archives at College Park, Maryland:
- On site: Cartographic and Architectural Records.
- Library guide: You Are Here: Maps in the Catalog.
National Oceanic and Atmospheric Administration, Central Library:
- On site: NOAA Central Library.
- Online: Catalog Search with Resource Type: Maps, Coast Surveys Historical Map and Chart Collection, LibGuides search for maps and U.S. Daily Weather Maps (1871-2002).
United States Geological Survey:
- On site: USGS Library in Reston, Virginia; Denver; and Menlo Park, California.
- Online: Catalog Search with Resource Type: Maps and Topographic Maps.
National Park Service:
- On site: NPS Library Information Center.
- Online: GIS, Cartography & Mapping.
National Agricultural Library:
- On site.
- Online: Catalog Search with Resource Type: Maps.
National Transportation Library:
- Online: Transportation Maps and Geospatial Data and Geospatial Application and Map Gallery