Interesting Metal Detecting Websites:

American Digger Magazine
Find's Treasure Forums
Friendly Metal Detecting Forum
Marks Metal Detecting Website
Metal Detecting Hobby Talk
Metal Detecting In The USA
Minelab Owners Forums
Relic Hunter On-Line Magazine
Stout Standards -
Treasure Depot
Treasure Spot Forums

ID, History and Collector Value of "Good For" Tokens:
Gary Kruesel

ID, History and Collecting Dog Licenses, tokens, lock and antique dog collars:

Coin Information:
Best Coin If you want to see what your coin finds are worth then check out Best Coin.Com. It has an updated price guide for all U.S. coins.
Coin Community Family  Read all about the history of the coins that you are digging up.  Great informative website that is a must visit!
Don's World Coin Gallery  Identify world coins.

Resource Links:
Defunct Amusement Parks  Great site for researching old amusement parks.  The definitive resource for drive-in information.