>I'd really love to find a list of release dates for various versions of AutoCAD for an article I'm writing on the increasing pace of change.
>
>Any sources you can suggest?

I'm sure you could find a lot of the earlier dates here. http://www.fourmilab.ch/autofile/www/autoframe.html. It's John Walker's book about how AutoDesk came to be. It's a really good read but a little long. I think the book was 900 pages. :)

they used to be listed in the manuals, but I couldn't find it a quick look at the r14 books.

I guess you found it IAC.