The best way I know to get rails is out of an old supermarket, or butcher shop. Boxed beef replaced hanging beef in the 70's so the rail systems in stores became obsolete.
    If you can contact a state dept. of agriculture inspector that calls on the grocery stores he may be able to point you in the right direction. Otherwise try older grocery stores in  smaller towns and talk to the owners or meat managers. You should be able to find them relatively cheap as long as you're willing to remove them yourself.
    Good luck.

Dave