US Digital Map Library: USGenWeb Project
Large collection of historic digitized United States maps. This is a wonderful site for viewing historic maps.

Civil War Traveler
U. S. National Parks Service maps of Civil War Historic Sites.

Library of Congress Panoramic Maps
Large collection of panoramic maps of U.S. and Canadian city maps from 1847 - 1929.

Historic Maps of Dutch Cartographers

Pacific Northwest Railroad Maps

Mapping Virginia
Samples of 400 years of Virginia mapping from the Library of Virginia.

Bodleian Library Map Room: The Map Case
Located in Great Britian, the library is one of the world's oldest and largest. Provides many unusual maps of Britian and the New World.

David Rumsey American Map Collection
Thousands of clickable maps of North and South America from the 18th and 19th centuries.

Osher Map Library
Rotating collection of historical maps from the University of Southern Maine.

Maps of Paris

Ptolemy's Geography