David Rumsey's Map Collection Over 6,000 high-resolution digital images of maps from the David Rumsey Collection, one of the largest private collections of historic maps in the US. http://www.davidrumsey.com/

International Antiquarian Mapsellers Association (IAMA) The IAMA's main purpose is to promote the professional trade of antiquarian, collectible maps and related books combined with promoting public interest. http://www.antiquemapdealers.com/

Road Map Collectors of America RMCA is a group of road map collectors throughout North America and Great Britain. http://www.roadmaps.org/

David Hulse Associates Fine, guaranteed, antique maps, Antique prints and Antique books, early photographs and from David Hulse Associates. http://www.oldmapsprintsbooks.co.uk/

A World of Maps Maps, globes, atlases, guide books, and zip code maps; also custom mapping and satellite images. http://www.aworldofmaps.com/

Walker Map Studio Creates unique, custom, hand-painted maps based on a client's trip or historical area of interest. http://www.walkermapstudio.com/

WensWood, Ltd. Solid oak United States quarter maps with press-in pockets to hold the coins. Photos and company background. http://www.wenswood.com/