Numismatic Organizations:

American Numismatic Association
American Numismatic Society
ANA Membership
FUN Topics
International Paper Money Show
Latest issue of MintMark
Professional Numismatists Guild
ANA’s website for YNs

Professional Coin Grading Services:

Numismatic Guaranty Corporation of America - NGC
Professional Coin Grading Service - PCGS
ANACS Coin Grading Service
Independent Coin Grading Company - ICG

Professional Currency Grading Services:

Paper Money Guaranty - PMG
PCGS Currency
Currency Grading & Authentication - CGA

Florida Coin Clubs:

Tampa Bay
Central Florida
Treasure Coast Coin Club
The South Brevard
Palm Beach
The Greater Jacksonville
Hollywood - Gold Coast
St. Petersburg
FUN - Orlando

ANA Coin Clubs:

Colorado Springs Coin Club
California State Numismatic Association
The Buffalo Numismatic Association
Denver Coin Club
Ocean County Coin Club
Atlantic County Numismatic Society
Trenton Numismatic Club
Omaha Coin Club
Pacific Coast Numismatic Society
Tidewater Coin Club
Mesa Coin Club
Tri-Lakes Coin Club, Inc.
Mansfield Numismatic Society
Orders and Medals Society of America
Augusta Coin Club
Blue Ridge Numismatic Association
Indiana State Numismatic Association
Logansport Coin Club
Cedar Rapids Coin Club
Des Moines Coin Club, Inc.
Johnson County Numismatic Society
Kansas Numismatic Association
Manhattan Coin Club
Bluegrass Coin Club
Crescent City Coin Club
Bowie Coin Club
Northwest Coin Club
Red River Valley Coin Club
The Coin Shop - Biloxi
Missouri Numismatic Society
The Ozarks' Coin Club
Lincoln Coin Club
Reno Coin Club
Nashua Coin Club
The Albuquerque Coin Club
Central Ohio Numismatic Association
Cincinnati Numismatic Association
Bend Coin Club of Central Oregon

Pacific Northwest Numismatic Association
The Anderson Area Coin Club
Pee Dee Area Coin Club
Chattanooga Coin Club
The Memphis Coin Club, Inc.
Boeing Employees Coin Club
Central States Numismatic Society
The International Bank Note Society
The Milwaukee Numismatic Society
Charleston Coin Club
Kanawha Valley Coin Club

Reference Sites:

Numismatic Directory
Coin Resource Coin Encyclopedia
John Reich Collectors Society
Token & Medal Society (TAMS)
The Combined Organizations of Numismatic Error Collectors of America (CONECA)
Bureau of Engraving and Printing
United States Mint
National Numismatic Collection (USA)
Ancient Greek and Roman Coins
Biblical Coins
Coin Trackers
Coin Week
U.S. Mint Collector's Corner
Coin World
Numismatic News
PCGS Price Guide

Online Coin Related Forums:

Topical and Specialty Coin Clubs
Purely Numismatics
NGC Coin Forums
PCGS Coin Forums
Collector's Universe - US Coin Forum