| askphil.org | AskPhil: Collectors Club of Chicago |
| ukphilately.org.uk | UK Philately |
| stanleygibbons.com | Stanley Gibbons |
| stamps.net | Stamps.Net - Philately's Online Magazine |
| stamp2.com | Stamp2.com |
| philatelic.com | Philatelic.Com & Philatelic.Net - The Ultimate Stamp Collecting Website |
| linns.com | Linns.Com: The Website Of The World's Largest Weekly Stamp Newspaper-linn |
| gnu.org | GNU Free Documentation License |
| glassinesurfer.com | A Sociable Stamp Society |
| donblack.com | Don Black Brass Trains |
| zillionsofstamps.com | www.zillionsofstamps.com/ |