Hat tip to http://www.hotrod.com/articles/well-know-muscle-car/ for bring up the topic of what to do with rare old documents and dealership items in an article by Tom Shaw;
The deep specifications about our cars, like SAE reports, AMA specifications, and Manufacturer’s Engineering Reports, were never intended for public consumption. They stayed in dealership service departments, engineering labs, or in the archives of racing organizations like the NHRA and NASCAR. As the years rolled on, enthusiast interest in muscle cars grew, while dealer interest declined.
Ever been to the Corvette Museum in Bowling Green? I’d sure like to see something on that level for muscle cars. The American Muscle Car Institute, maybe housed in an old dealership building, with a big wing to archive irreplaceable muscle car documents, literature, and history. Need some info about your car? Pick up the phone and ask the reference desk. For a small fee, a copy of the page will be sent or scanned and emailed. "
Sadly the irony of selling off these items and not donating them to such an endeavor wasn't appearant to Tom, and the library he'd collected (some of which you see above) was sold to Geoff, who in turn is selling it off in pieces.
I believe Hot Rod couldn't see this, maybe a side effect from the 70s features of vans and VW bugs. Shiver. Those were some dark days the the path was lost. Hot Rod Magazine never recovered. It's been bought and sold several times since, and had to give away the archives to get them digitally stored and cataloged. Now they are in the Pete, and Getty has the rights, and sells them. Ho Hum.