The Minnesota Golf Association
http://www.mngolf.org

The United States Golf Assocation
http://www.usga.org

The Royal and Ancient Golf Club of St Andrew's (Britain's golf rules body)
http://www.randa.org

The Professional Golfer's Assocation
http://www.pga.com

The Golf Course Superintendent's Association of America
http://www.gcsaa.org

The American Society of Golf Course Architects
http://www.golfdesign.org

National Golf Foundation
http://www.ngf.org

Minnesota Section of the PGA
http://www.minnesotapga.com

Junior Golf Links
http://www.juniorlinks.com

The First Tee Program
http://www.thefirsttee.com

The PGA Tour
http://www.pgatour.com

Golf Digest
http://www.golfdigest.com

Golf Magazine
http://www.golfonline.com

The Golf Channel
http://www.thegolfchannel.com

The European Tour
http://www.europeantour.com

The LPGA
http://www.lpga.com
 

....... and more to come (Any suggestions?)