  |
American Philatelic Society - http://www.stamplibrary.org/
The largest public philatelic library in the United States, Its holdings include catalogues, government documents, auction catalogues, and a variety of other materials. Located in State College, Pennsylvania. |
  |
Rocky Mountain Philatelic Library - http://www.rockymountainphilateliclibrary.com/
Houses over 5000 books on philately, issues of periodicals, auction catalogs for research purposes, a western history (postal history) and railroad collection, post office publications dating back to 1876, a collection of maps dating back to the 1870's, and an education program for children and beginning adult collectors. Denver, Colorado. |
  |
Western Philatelic Library - http://www.pbbooks.com/wpl.htm
Located in Sunnyvale, California, the library has over 8,000 philatelic books and monographs available for public examination. |
  |
National Philatelic Society Library (NPSL) - http://www.ukphilately.org.uk/nps/library/library.htm
A library with 1750 linear feet of shelving covering all aspects of stamp collecting from 1865 to date. It is very strong on periodicals of the world. |
 |
The Canadian Postal Archives - http://www.collectionscanada.ca/philately-postal/index-e.html
Provides an overview of the philatelic collections preserved by the National Archives of Canada. Includes information about every postage stamp issued by Canada and British North America since 1851. |