David Rumsey Historical Map Collection over 13,000 maps available for viewing online. http://www.davidrumsey.com/
Directions Magazine Map Gallery A terrific collection of maps produced using many different software packages and data sets. If you have a dial-up connection, the enlarged images will take a long time to load. http://www.directionsmag.com/mapgallery/
ESRI Map Book Gallery A collection of the maps included in the last three ESRI Map Books.http://www.esri.com/mapmuseum/index.htm
San Jose State University’s historic map collection http://gallery.sjsu.edu/cartography/maps/
Yale University Library Map Collection Online Maps: http://www.library.yale.edu/MapColl/print_online.html
College of the Atlantic GIS Laboratory: Includes a gallery of student work. http://www.coa.edu/html/gisprojects.htm