Vatican Philatelic Society - The first and oldest philatelic society in the United States dealing exclusively with stamps and related matters of the Vatican and Roman States

United States Postal Service 

Joe Luft's Philatelic Resources on the Web - THE SOURCE for philatelic information on the internet.

Vatican City Philatelic and Numismatic Office

Linn's Stamp News - The largest weekly philatelic newspaper in the US

Scott Catalog

American Philatelic Society - The oldest philatelic society in the US

Subway Stamp Shop - The largest coin and stamp supply company in the World

General Information for those new to Philately