I usually go the the website of the sales comapny in this case OBS and look under sales results. I know at least Fasig Tipton will have this on their website. As side from this I know the Bloodhorse usually prints the sales results in the back of their magazine.
They won't list the name of the colt or filly unless it is actually named, though... right? The particular hip #'s he was interested in were not named yet.