Websites that may be of interest to antique map and antique print collectors:

The Geography and Map Division of the Library of Congress
Home of the world's largest cartographic collection.
http://lcweb.loc.gov/rr/geogmap/gmpage.html

The History of Cartography Project at the University of Wisconsin
A major resource of global scope.
http://feature.geography.wisc.edu/histcart/

The David Rumsey Map Collection
A major online resource of American historical cartography with thousands of image.
http://www.davidrumsey.com/

Bodleian Library Map Room at Oxford University
http://www.bodley.ox.ac.uk/guides/maps/mapcase.htm

Texas Tech University Map Library
http://library.ttu.edu/ul/maps/

The map collection at Yale University
http://www.library.yale.edu/MapColl/online.html

The American Intitute for the Conservation of Historic and Artistic Works, at Stanford University
http://aic.stanford.edu/

The American Historical Print Collectors Society
http://www.ahpcs.org/index.htm

The Northeast Document Conservation Center
The largest nonprofit, regional conservation center in the United States.
http://www.nedcc.org