The Poway Stamp Club of San Diego County is a member and affiliate of the American Philatelic Society (APS).
The APS has members in more than 110 countries, it is the largest, non-profit organization for stamp collectors in the world. Founded in 1886, the APS serves collectors, educators, postal historians and the general public by providing a wide variety of programs and services.
The San Diego Philatelic Library
The San Diego County Philatelic Library is a not-for-profit philatelic library in Poway, San Diego County, California. The Library hosts approximately 16,000 volumes of books, monographs, catalogs and periodicals. The Library and its facilities are operated by friendly volunteers who are ready to help support your Philatelic needs.