This is the Index Page for Postmarks articles on Philatelic Pursuits.
Great Britain’s Royal Mail publishes a detailed Postmark Bulletin each month with extensive details on ordering British postmarks. The United States Postal Service also provides information and addresses in its periodic Postal Bulletins in the Stamp Services section. This information is reproduced here (and linked below).
If you know how to obtain other entities’ special postmarks (excluding first day of issue cancellations), please send me an email to the address at the bottom of this page so that I can publicize that information on this site.