Megawebsites

Encyclopedia of USA Labor History
For those who like to know about the people involved, this mega-website has biographies of major labor figures plus information on events, unions and legislation.

American Labor History: An Online Study Guide
Good for a quick exploratory, but not in-depth research, this mega-website can also be done as a ring.

Coal Mining, Mine Fires and the Molly McGuires
This collection of links from the deals with coal mining, its problems, and the radical labor group nicknamed the Molly McGuires.