If you go to the track websites (Keeneland, Del Mar, Turfway) - I know a couple tracks had a clickable "synthetic surface installation" tabs, where they showed multiple pictures of the installation in progess, and closeups of the Poly.
Try Keeneland first, they had a bunch of webpages and photos up
Also try searching for the websites for the companies:
www.polytrack.com (gets you back to Keeneland I think),
www.tapeta.com www.cushiontrack.com etc.