pmdclasics Your billing history for the 68 provided by PHS should have a zone and dealer code in the upper left hand corner. ( not positive since I have only seen a 1967 form).
The answer to your question may possibily be found by following this link for zone and dealer code discussion.
If that doesn't work, look in the second post in this thread for Triple A enterprises or visit the PHS site. They make window stickers and may be able to provide that information on a window sticker for a fee.
