Glenny Boy - that's what I've noticed as well, I'm hoping people will scan their copies in for me when I get to the last ones. I've bought loads of cheap brochures from Ebay which I'm currently scanning in, it's quite a laborious project.
StephenC - I believe we're quite entitled to make all of this information freely available, for two main reasons;
1) Ford never charged for brochures (and they will be free to download from my site)
2) Fair Use provision of the Copyright Act - allows you to redistribute for research, educational, news reporting etc.
The brochures from the 60's/70's/80's are fast disappearing