Anheuser-Busch Adventure Parks [more]
Operator of parks such as Sea World, Busch Gardens, and Adventure Island. Provides links to owned facilities and online ticket ordering.
http://www.4adventure.com/

Boomers [more]
Operates a number of amusement and water parks throughout the United States. Offers news, employment opportunities section, and information on the Fun Club.
http://www.boomersparks.com

Cool Works [more]
Seasonal career positions in amusement and theme parks.
http://www.coolworks.com/amusement-park-jobs/

Theme Park Adventure Magazine [more]
Includes current and back issues, ordering information, and park news.
http://www.themeparkadventure.com/

Theme Parks Online [more]
Enthusiast e-zine. News and events, discussion boards, glossary, history, park records, hotel and attraction reviews.
http://www.themeparksonline.org/