The Ephemera Society of America, Inc.
- A non-profit organization devoted to furthering the collection, study, and preservation of ephemera (paper items).
- http://www.ephemerasociety.org/

Antique Advertising Association of America
- Organization for collectors of antique advertising. Specializes in advertising tins and signs; advertising displays; bottles; trade cards; calendars. Many just specialize in a specific area such as tobacco, beer, soda, typewriter, and oil.
- http://www.pastimes.org/