postcard clubs, trade card clubs, and ephemera related associations
postcard and/or trade card reference information
antiques and collectibles directories, and webrings
The Ephemera Society of America is a non-profit organization formed in 1980 to cultivate and encourage interest in and enjoyment of ephemera and the history identified with it. World-wide ephemera societies: The Emphemera Society of England, The Ephemera Society of Austria. Canada and Australia also have societies.
The Twin Cities Postcard Club An organization from the Greater Minnesota area, who enjoy the hobby of postcard collecting, trading and learning more about the hobby from each other. Includes book and newsletter library.
San Francisco Bay Area Postcard Club An organization that fosters postcard collecting (with emphasis on the SF Bay Area). Wealth of information, including newsletter archives, Q&A Forum, and Exhibits. You will also find a link to US Copyright Info.
Antiques and Collectibles Directories
Blogarama Directory with a hobby category.