InfoGuides: Atlases & Maps: Access Online Resources

United States

Census Atlas of the United States
Collection of atlases for population of housing information produced by the Bureau of Census since 1920.
Census Tract Maps-1940 and 1950
From Indiana University. Scanned Census Maps in 1940 and 1950 Cities.
Enumeration Census District Maps
Links various genealogy resources including 1880's Enumeration Census District maps.
Unified Census ED Finder
One-stop genealogy website to find the enumeration district number based on an address (via Steve Mores's Org).

USGS Digital Historical Topographic Maps
Access historical topographic maps and download in pdf or geotiff file (via topoview).
National Map
One stop to find maps available through USGS-topo, geologic, reference maps, geonames, hydrological maps, etc.
ArcGIS TopoExplorer
USGS Historical Topographic Map Explorer, part of ArcGIS Living Atlas of World Project.

National Geologic Maps
Discover and download geological maps provided by USGS.
Geologic Atlas of the U.S.
A set of folios provided by the U.S. Geologic Survey between 1985 and 1945 (via Texas AM University).

National Aerial Photography (NAPP)
Collection of aerial photos from NAPP. Download in shape or kml files.
Historical Aerial Photos
Collection of historical aerial photos.

Broer Map Library Collection for Historical Maps
A collection of historic maps online from the 19th & 20th centuries.
David Rumsey Map Collection
Over 70,000 maps (historical) and images online and check it out also at Stanford Univ. David Rumsey Collection Center.
Library Congress Map Collection
Search the largest collection of online and print maps in the U.S.
NY Public Library-Digitized map collection
Look for some historical map collection from here. Note: Archived site, NYPL no longer updates this page.
Perry-Castaneda Library Map Collection
Maps of world by regions, countries, and topics (via University of Texas at Austin).
Stanford Univ.-Exhibits of Africa Maps
A digital collection of African maps at Stanford.
UN Collection of general maps
UN Member states from 1944 to 2015.
Worldatlas.com
Outline Maps for Continents and Country.
World Atlas Map via GIS Lounge
Get World Atlas, individual country map and more.

ChicagoAncestors.org
From Newberry Library for genealogists or academics in discovering historical information about Chicago.
Geography.About.Com
Blogs for basic concepts about geography and maps.
Maps and Atlases at Borchert Library
Lists extensive online map collection and resources (via University of Minnesota).
Mapsmania
A blog dedicated to tracking the best digital interactive maps on the Internet.
NYPL-Map Wraper
A tool that allows you find, edit, rectify (Georeferencing) scanned historical maps to match precise today's location.
Persuasive Map Collection
More than 800 interesting maps that influence opinions or beliefs (via Cornell University).
USGS Topographic Map Symbols
Interpretation of various Topo map feature symbols.
World Factbook
Information on the history, people and society, government, economy, energy, geography, communications, transportation, military, and transnational issues for 267 world entities including flags and maps.
WorldMap (via Harvard University)
Upload your layers or search layers and map service projects developed by others. Can download layers or geotiff image files.