Truck Repair: Transmission, 1967 ford f100, speedometer gear

Question
Where can I find a detailed illustration of parts for a 1967 Ford F100 with cruiseomatic transmission?  I mainly need parts for the speedometer gear assembly.  I have searched the web to no avail and had no luck w/local parts stores or Ford dealer.  I am trying to repair the speedometer but I know a part is missing but don't know which one.

Thanks!
James

Answer
Hi James,
To see an exploded view, the public library, refference section should have some old Motors, Mitchell, or Chilton manuals.
Some salvage yards are connected to each other on line, and can usually run down some of those older, hard to find parts.
A transmission shop that has been in business for a long time might also have some old manuals, and maybe even the parts.
Van