Bel Canto Farms owned by Suzanne Warmack.
At the risk of sounding like a total nutcase, I emailed Suzanne, explained the road name and my horse's name, and asked if she could take a picture of the street sign for me. She agreed and only asked for a picture of River in return.
So how cool is that?? Next mission: get someone to steal the sign for me! (I'm kidding, I'm kidding! But, uh, if you're inclined to steal a road sign anyway.....)
A million great big thank yous to Suzanne! I really can't say how happy this makes me!