Ford has always had it all over Holden and Valiant for historical documents and information for owners.
With both the GT Cortina and TE Cortina rally Pack we owned, I sent to Ford with the cars details, and got back, free of charge, a big envelope with photocopies of the original order papers and options, where it was sold and who bought it, where it was built and exactly when, and with the GT they even sent a photocopy of an original owners handbook with the relevant pages about the differences between a GT and a normal Cortina. It was great stuff!
Valiant actually chucked out all their old paperwork and information when Mitsubishi took over, all going in the dumpsters...some was saved, but not much...