A reference resource for the postcard collector.
Behind the Green Door
Postcard articles and links.
Emotions Cards: Postcard and Greeting Card Museum
A history of postcards.
International Federation of Postcard Dealers
Although primarily a postcard dealers organization, the purpose is to encourage professionalism, increase confidence, strengthen ethics as well as advance and promote the postcard hobby worldwide.
Postcard Collectors' List
Dealers and collectors database.
Postcard pages: collecting and news.
Postcards Email List
An online interactive newsletter which is almost like an ongoing conversation on the subject of postcards.
Explore the world of postcards.
Reflections of a Bygone Age
Magazine for postcard trading.
A history and glossary of terms for postcard collectors.