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Federal
Historical Map & Chart Collection of NOAA's Nautical Charts, Hydrographic Surveys, Topographic Surveys, Geodetic Surveys, City Plans, and Civil War Battle Maps Starting from the mid 1700's
National Oceanic and Atmospheric Administration, Department of Commerce —
The Historical Map and Chart Collection of the Office of Coast Survey contains over 35000 historical maps and charts from the mid 1700s up through the 2020s,... -
City
Philadelphia Historic Maps
City of Philadelphia —
Data includes historic maps of the City of Philadelphia that are shared in Atlas.phila.gov, allowing users to switch between current imagery and historic maps. -
Federal
Nonindigenous Marine Species Introductions in the harbors of the South and West Shores of Oahu, Hawaii 1997-1998 (NCEI Accession 0000324)
National Oceanic and Atmospheric Administration, Department of Commerce —
Despite the potential importance of Honolulu Harbor or other commercial harbors on Oahu as potential gateways for nonindigenous marine species to enter the Hawaiian... -
City
Elect_StAsmbly_Dists
City of San Francisco —
A historical map of the California State Assembly Districts based on the 2011 boundaries. -
University
Rio Grande Channel, El Paso Area, 1852
Earth Data Analysis Center, University of New Mexico —
Historical map of Rio Grande river between Texas and Mexico. U.S.-Mexican Boundary Survey.The original map is a Xerox of a Photolithographic Copy of Salazar... -
Federal
Fractional Estimates of Multiple Exotic Annual Grass (EAG) Species in the Sagebrush Biome, USA - 2020
Department of the Interior —
This dataset release provides historical (2016 - 2023) estimates of fractional cover for Exotic Annual Grass (EAG) species and a native perennial bunch grass in the... -
Federal
Mill Site Locations, CRMS, 2020, NDEP and Broadbent Associates, Inc.
U.S. Environmental Protection Agency —
This feature class depicts Comstock-era mill locations within the Carson River Mercury Site (CRMS). These locations were obtained in order to define the investigation... -
State
Iowa Geographic Map Server
State of Iowa —
This site provides free access to Iowa geographic map data, including aerial photography, orthophotos, elevation maps, and historical maps. The data is available... -
Sewer Survey Historic Map - 1873
District of Columbia —
Exhibit chart showing streets & avenues of the cities of Washington and Georgetown, improved under the Board of Public Works, D.C. : Nov. 1st 1873 -
University
Acequias near El Paso, TX, 1853-1855
Earth Data Analysis Center, University of New Mexico —
Historical map of acequias along Rio Grande river between Texas and Mexico. U.S.-Mexican Boundary Survey. The original map is a Xerox of a Photolithographic Copy of... -
Federal
Hydro Flow Metrics Historical (Map Service)
Department of Agriculture —
This map service represents modeled streamflow metrics from the historical time period (1977-2006) in the United States. In addition to standard NHD attributes, the... -
City
Greater Philadelphia GeoHistory Network
City of Philadelphia —
The Greater Philadelphia GeoHistory Network contains geographic materials connected to the history of Pennsylvania, New Jersey, and the City of Philadelphia. The...