Liberty Nickel Collector Society  
   The premier online club for collectors of Liberty Head Nickels. Complete information from patterns to the famous 1913 Liberty Nickel.
   http://www.libertynickels.org/

Early American Coppers  
   EAC is a not-for-profit numismatic specialty organization founded in 1967 to serve as a point of contact for collectors of early U.S. copper coins - Colonials, Half Cents, Large Cents, and Hard Time Tokens
   http://www.eacs.org/

CONECA  
   National numismatic organization devoted to error and variety collectors.
   http://conecaonline.org/

The Society of U.S. Pattern Collectors  
   A collector club for individuals who collect US Patterns. Patterns are prototypes for coins that, for the most part, were never approved for circulation.
   http://www.uspatterns.com/

US Mexican Numismatic Association  
   A numismatic association in the United States, devoted to Mexican Numismatics.
   http://grasshopper.grasshoppernet.com/USMexNA/usmexna.html

FlyInClub.com  
   The Flying Eagle and Indian Head cent collector's society. Club news, member classified ads, and journal, "The Longacre Ledger."
   http://www.flyinclub.com/

Young Numismatists of America  
   Promotes numismatics among young numismatists. Publishes a quarterly journal, with features articles, club news, and contests,
   http://www.ynaclub.org/

American Medallic Sculpture Association  
   Contains information on medallic art, images, a listing of events and exhibitions and membership information.
   http://www.amsamedals.org/

Casino Chip and Gaming Tokens Collectors Club  
   Includes club information, a message board and reference material.
   http://www.ccgtcc.com/

The Colonial Coin Collectors Club  
   Contains information on joining, reference material, a mission statement, a primer on collecting and a lending library.
   http://www.colonialcoins.org/