CBA Changes Historically

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I was wondering if there were resources for looking into the changes of the CBA historically.

I've been reading the Salary Cap FAQ. It looks at changes between the 2005 and 1999 agreements, but I imagine other changes in the past have been fairly significant, and that those changes have had a large impact on player's salaries.

Any help would be greatly appreciated.

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any ideas?

http://www.nbpa.com/history.php
http://www.apbr.org/labor.html
I found two helpful links so far, but they provide a more general overview. i'd like something more comprehensive.

thanks!