Here we have links to Philatelic resources and sites we like and might be useful as a starting point for research or membership. Please let us know if you would like your site included in here.
While we figure out how to structure the links can we recommend the following:
The Royal Philatelic Society London
The oldest philatelic Society in the world, established in 1869 as
The Philatelic Society, London. https://www.rpsl.org.uk/
American Philatelic Society
Another great list of resources and clubs.
Stampdomain.com have another great list.