LibGuides: GIS and Maps: GIS and Maps

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Data Sites

Census TIGER Files
Access U.S. Census Bureau's MAF/TIGER files.
U.S. National Map
From the National Geospatial Program of the USGS
National Centers for Environmental Information
A variety of data from the National Oceanic and Atmospheric Administration (NOAA).
National Historical Geographic Information System (NHGIS)
The NHGIS "provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2014."
U.S. Gazetteer Files
From the U.S. Census Bureau.
USGS Data and Tools
Access datasets, including GIS data files, from the U.S. Geological Survey (USGS).
Vermont's Open GeoData Portal
Vermont GIS data from the Vermont Center for
Geographic Information.

Historical resources

Historical GIS Clearinghouse Projects & Programs
Lists of projects that "apply geographic technologies to historical research", from the AAG.
Old Maps Online
From the University of Portsmouth, UK. Search several historical online map collections at once.
National Historical Geographic Information System (NHGIS)
"Provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2010."
Map Collections
From the British Library.
USGS Historical Topographic Map Explorer
From Esri and the U.S. Geological Survey. Interface for accessing over 178,000 historical topographic map sheets created from 1884 to 2006, covering the entire US at nearly all of the published scales.

GIS Lounge News Feed

What is GIS?

"Geographic information describes the locations, characteristics, and shapes of features and phenomena on the surface of the earth. Traditionally, such information has been produced, disseminated, and used in the form of paper maps and atlases, using various projections to allow the curved surface of the earth to be represented on flat paper...Today, vast amounts of geographic information are available for use in digital form, and a system that handles, processes, edits, manipulates, analyzes, and displays such data is a called a geographic information system (GIS)."

Geographic information system (gis). (2003). In E. D. Reilly, A. Ralston, & D. Hemmendinger (Eds.), Encyclopedia of computer science (4th ed.). Hoboken, NJ: Wiley.

GIS and Maps: GIS and Maps

Table of Contents

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Data Sites

Historical resources

GIS Lounge News Feed

What is GIS?

Featured GIS Data

Orthoimagery Data

Structures Data

Vermont's Open GeoData Portal