Ancestry ($ or access at libray or local Family History Center) Collection of maps, atlases and gazetteers, subscription required

Animap $ Puchase software to show U.S. state and territorial boundary changes from 1776

AnyPlace America Free US topographical maps, good for finding small watercourses and springs in land descriptions

Arphax Publishing’s Family Map Series of Land Patent Books can be ordered here

Atlas of Historical County Boundaries Project Newberry Library’s interactive state maps showing county boundaries with user setting the year

Atlas of the Historical Geography of the United States the University of Richmond’s digital edition of Charles O. Paullin and John K. Wright’s 1932 atlas, animated to show change over time with clickable underlying data

Cassini Maps detailed historical maps for England and Wales, dating from 1853

Charles Booth Online Archive the London School of Economics poverty maps of London from 1886 to 1903.

David Rumsey Historical Map Collection Over 13,000 maps, primarily 18th and 19th century

Dollarhide’s Census Map Guide  Collection of Dollarhide’s Census Map Guide showing how each State’s counties changed over time is available at home with Kitsap Regional Library card. Click on Research>Genealogy>Heritage Quest>Maps

Early Irish Maps c.1558 – c.1610 National Archives collection of early maps of Ireland, created when land ownership was transferring from the native Irish to English settlers, $ to download maps

Falling Rain Interactive mapping software for the entire world

Fold3 $ Maps

Geographic Names Information System (GNIS) information about physical and cultural geographic features in the US and associated areas, current and historical (not including roads and highways)

Google Earth Free software showing maps and satellite imagery for the world

Google Maps Interactive mapping software for the entire world

The Gough Map of Great Britain 14th century map of England

The Growth of Newspapers Across the U.S., 1690-2011 Visualization of newspapers acorss the U.S. over time

Historical County Boundary Maps trace US historical county boundaries on Google maps

Historical Map Archive University of Alabama’s historic maps of the world

Historical Maps Online Topographical maps of North America, Northwest Territories, Canada (Nouvelle France), Early Maps, Illinois, Indiana, Champaign County, and Warner & Beers Atlas

Historic Mapworks ($ or access at local Family History Center) Searchable GIS maps for the 19th and early 20th centuries

Irish Historic Maps Ordnance Survey Maps 1829-1842, ($) to download

Library of Congress Map Collections 1500-2004

Library of Congress Panoramic Maps 1847-1920

Locating London’s Past 1746 map of London overlaid on a Google map, created by the Centre for Metropolitan History and Museum of London Archaeology

Map of US Historical animated maps showing county boundary changes and county boundaries for each U.S. census year

Map Warper allows you to overlay an historic map onto a modern map and rectify the two, downloads of more than 20,000 maps of places around the world Mapping programs for county boundaries, latitude/longitude and more

Mapping Migration in the United States shows resident populations of each state for 3 different years, 2012, 1950 and 1900, and their places of birth

National Library of Scotland Find maps of England, Scotland, Wales and Ireland

Norman B. Leventhal Map Center Boston Public Library’s collection of 200,000 maps and 5,000 atlases illustrating the development of mapmaking. Special focus on New England but other areas of the country and world are included.

Old Maps of New England Wall maps of the late 1850s of Vermont, New Hampshire, Massachusetts and Maine. Reproductions and CDs available

Old Maps Online Gateway to historical maps in libraries around the world

Perry-Casteneda Library Map Collection at the University of Texas, an extensive collection of maps of all parts of the world

Sanborn Fire Insurance Maps Library of Congress Collection Useful for finding homes of urban ancestors

Sanborn Maps – How to Use the Library of Congress’ New Sanborn Maps for Genealogy  Family Tree Magazine Genealogy/Insider Blog

Sepiatown Collection of mapped historical images from around the world, users can contribute images

UK Ordnance Survey and Historic Maps

United States Census Maps & Data Census data mapper, reference maps and thematic maps

United States Digital Map Library USGenWeb Archives collection with US maps, state and county maps and Indian land cessions

United States National Archives Finding Aid for Selected Maps of States and Territories describing approximately 900 state maps from their holdings, to order maps on or off-site

University of Virginia’s Cultural Maps with links to online maps including historical maps and geography

US Genweb volunteer site organized by state and couny, with many maps

US Geologic Survey Historical Topographical Map Collection high resolution topo maps of the contiguous United States, $ to order map or download

US Historic Maps of New England and NY from the University of New Hampshire Library