| American Stamp Dealers Association |
www.asdaonline.com |
| Australasian Numismatic Dealers Association |
www.anda.com.au |
| Australian Philatelic Federation (APF) |
www.apf.org.au |
| Australia Post Philatelic Site |
www.stamps.com.au |
| Federation Internationale de Philately (FIP) |
www.f-i-p.ch |
| Federation on Inter-Asia Philately (FIAP) |
www.asiaphilately.com |
| International Association of Philatelic Publications |
www.ascat.org |
| International Federation of Stamp Dealers' Association |
www.ifsda.com |
| Philatelic Traders' Society Ltd. (PTS) |
www.philatelic-traders-society.co.uk |
| Worldwide Stamp Show Listing |
www.stampshows.com |
| American Topical Association (Thematics) |
www.americantopicalassn.org |