Map collections

Google Maps which includes satellite photos.

David Rumsey which is a wonderful collection of historic Maps.

Map Collections: 1500-2004 at the Library of Congress.

Historical Maps of New England at the UCONN Map Library.

Online Maps at Yale University.

Map History / History of Cartography a site maintained by by Tony Campbell, formerly Head of the British Library Map Room.

Maps Online from World History Sources from George Mason University.