• American Philatelic Society
  [www.stamps.org]
• British Library [Philatelic Collections]
  [www.bl.uk/collections/philatelic]
• British North America Philatelic Society
  [www.bnaps.org]
• Canadian Philatelic Society of Great Britain (United Kingdom)
  [www.canadianpsgb.org.uk]
• Canada Post [Philatelic section]
  [www.canadapost.ca/cpo/mc/personal/productsservices/collect/default.jsf]
• Canadian Postal Museum
  [www.civilization.ca/cmc/exhibitions/canadian-postal-museum/canadian-postal-museum]
• Canadian Stamp Auctions
  [www.canadianstampauctions.com/]
• Canadian Stamp News
  [www.canadianstampnews.ca]
• Fédération Québécoise de Philatélie
  [www.philatelie.qc.ca/] (only in French)
• Musée de La Poste (France)
  [www.netvibes.com/ladressemuseedelaposte/#Accueil] (only in French)
• National Postal Museum (United States)
  [www.postalmuseum.si.edu]
• Postal History Society of Canada
  [www.postalhistorycanada.net/php/]
• Royal Philatelic Society of Canada
  [www.rpsc.org]
• Société d'Histoire Postale du Québec
  [www.shpq.org/] (only in French)
• Vincent Graves Greene Philatelic Research Foundation
  [www.greenefoundation.ca/]

Directories

• Joseph Luft’s Philatelic Resources on the Web
  [http://luftfamily.com/cgi-bin/newadditions.cgi]
• Philatelic Links Online
  [www.pwmo.org/weblinks/links.asp]
• Stamp Libraries and Museums
  [www.stampshows.com/museums.html]
• Stamp2.com
  [www.stamp2.com/]
• StampLink
  [www.stamplink.com/stmpsite.htm]