Some good news, a friend forwarded this email he received from a buddy with direct knowledge:
Countering the alarmist tone of the thetruthaboutcars editorial you sent, with a phone call to my contacts at the Chrysler Historical Collection I found that the real Chrysler archives are in unviolated, untampered, wholesome condition.
The Engineering Library at Chrysler Technical Center did take the hit of closure and contents disbursement as part of the ongoing draconian expense reductions. However this was preceded by Brandt Rosenbush, Manager of CHC, combing over its contents and sending to CHC anything that might be of archival value.
While writing my book I spent some time at the Engineering Library. It had an impressive collection of books, periodicals and techincal papers including hundreds, perhaps thousands of SAE papers, but, to my knowlege little, if any, archival-worthy original material.