Regional Organizations:

Scotland's Highland Games
SSAA: Amateur competitions in the southeast US
SAAA: California
MASA: Atlantic Seaboard
RMSA: Mostly Colorado, and a few of the surrounding states
Ancient Athletics: Illinois area
HASA: Kansas area.  No Webpage, contact Bob Gillis haggispup@aol.com , 913-262-7201 or Steve Scott kcncc@juno.com
 

Other Heavy Events sites:

UHATV: The group that puts out the ESPN2 television shows
Scottish Masters: Webpage devoted to over-40 Highland athletes
NASGA: a lot of good info
Scottish Heavy Athletics: Somewhat out of date, but a lot of good info
Clan MacLachlan: This site has the most comprehensive list of Highland Games
USScots: Another listing... sometimes has better info
Highland Games Express: Photos and movie clips
Highlandgames.net: Movie clips
Scottish Rebel: Southern Am rankings, some other info