Paul
I passed the 5 pages listed above to Viva-Lancia a couple of years ago, I also copied it to Tim Speechley at Fiat UK who in turn passed it on to Fiat/Lancia as they didn't have this information either.
do you know the origin of the other pages? I note that you were the author of some of them?
Brian
8227 
All the data is from Lancia originally: D.COM/AST was the Department containing the Technical Assistance Service [see page 33 of Geoff Goldberg's new book].
The route of the pages to those that had them is probably uncertain. Some of the pages may have been obtained from the Biscaretti Museum archives. The page I wrote up has its sources noted on the page, but again the data will probably have come from various individuals visiting Turin.
There is a very interesting list of chassis numbers for the early cars, which I can contribute, again I think from the Biscaretti, but it does not belong on this thread.
Paul