Occasionally we are asked about appraisers or sale outlets for map.  As a free service to WMS members and the map enthusiast community in general, we provide the following list.  Please note The Portolan Journal might include advertising from some of the following, but the list below is provided free of charge and with no opinion or guarantee about the services provided or whether not the person or site mentioned is still in business.

http://www.maprecord.com/Dealers.html  -  list of map dealers
http://www.oldmaps.com/  - a list of map prices; fee charged
http://www.abaa.org/  - Antiquarian Booksellers' Association of America
http://www.aba.org.uk/ -  Antiquarian Booksellers in Europe