North America

CanHighways.com - Organized by state or province.
www.canhighways.com/

The Chris Kadlec Road Photos Gallery - Various views from trips around the continent.
www.beaglebass.com/roads/

Greg's Road Sign Pages - Wide coverage in the United States and Canada.
www.geocities.com/~wgrc/roadsigns/rmain.htm

Gribblenation.com - Includes information primarily covering the eastern third of the continent.
www.gribblenation.com/

Neil's Summer 2002 Roadtrip - Photo log of the Upper Midwest and Ontario, Canada.
nbratney.tripod.com/vac-2002/

Roadfan.com - The Lincoln Highway, the National Road, eastern Canada, and the Lower Mississippi River, Great Lakes, and New England areas in the United States.
www.roadfan.com/

State Line Signs - Includes personally-taken examples from both U.S. states and Canadian provinces.
www.johnweeks.com/stuff/states.html

State Route Salute - State and province route marker gallery.
www.angelfire.com/ne/msittel/Sroute.html

Why Do You Have So Many Pictures of Road Signs? - Includes U.S. and Canada coverage.
www.teresco.org/pics/signs/