Pine Tree - How are you able to go back that far? Every time I search on USEF I am only able to see results from 2005 on.
Thanks for the info!
In the example I gave I changed the year way back to 1999. Look at the complete URL and you'll see the year field.
This only works if you know the division the horse showed in. Although if you have a lot of time on your hands you can search several divisions. It's just a little time consuming.
Use the "advanced search" function in Google. It's just to the right of the search box. Put the "horse's name" in quotes, just like this, the rider's name with quotes, too. Use the line that says "without these words".