Collecting

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, appreciation and education with respect to antiquarian maps.
http://www.antiquemapdealers.com/

Scanned Old Maps - Collection of maps scanned from old books, including but not limited to, travel guides.
http://www.hipkiss.org/data/maps.html

Infography about Map Collecting - Online and print resources recommended by a professor emeritus who specializes in research about map collecting.
http://www.infography.com/content/439037796314.html

Map the Universe - A weblog documenting one person's journey into the world of antique map collecting.
http://www.maptheuniverse.com/

International Map Collectors Society - London-based organization for those interested in maps, including collectors, dealers, librarians, and academics. Activities overview, events calendar, journal, library, and resources.
http://www.imcos.org/

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

David Rumsey's Map Collection - Thousands of high-resolution digital images of maps from the David Rumsey Collection, one of the largest private collections of historic maps in the US. Focus is 18th and 19th c. North and South America cartographic materials.
http://www.davidrumsey.com/

Tribe: Map Lovers - Forum and community for those who enjoy old maps, topographical maps, road maps, atlases, GIS, online mapping tools.
http://maplovers.tribe.net/