[ForSale-Swap] Watkins-Johnson manual or schematic needed

[Skywarrior]

Hi All,
I recently obtained a crystal controlled WJ/CEI receiver #415-42.  I need the manual or schematic so I can determine crystal characteristics so that International crystal can produce crystals for the frequencies that I need.  Any help with this would be greatly appreciated.  If you have a manual I would be quite willing to pay for a copy.

TIA
Bruce