Yep, in books but I've seen the mention ( though probably quoting the book ) on a website or two of the Corvette story. The book, and I would assume their reputation was pretty impeccable considering the contributing authors and interviewees that were found listed in each volume and A Q's association with the Princeton Institute for Historic Research, was Automobile Quarterly, First Quarter 1981, Volume XIX, Number 1, pg 22 - 'Change Of An Image: Behind The Scenes At Amc With The Amx And The Javelin', by Robert C. Ackerson.
The TEAM car in question I pointedly asked the Randall grandson to confirm was in their possession about a year past. A few weeks after I posed the question I prodded him again and he told me that he had checked with his family ( father?, uncle, grandfather?- I know a couple of the Randalls have died ) and that it was the TEAM AMX for sure. The only thing left to do is to get all the known identifying facts about the TEAM car and go out there and check if they will allow it. I do know that they have pics of the car when they owned it early on and the driver's rear quarter still had the sponsorship lettering on it that vintage pics show on the car when it raced as the TEAM AMX. Check out the pics on the AMC Forum ( Bill D's site ) and elsewhere. If th car they own now is the car they owned then it is the TEAM AMX. Short of scraping off layers of paint there have to be other identifiers as to the car's provenance.