I also received multiple emails off-list telling me to
buy
McKusick's archives.
As well you should, I'm pretty sure they have the SCCS history. If you
need a SCCS tool that can read 'em, we still have that though we're
about to toss that compat mode.
If not us, find some SCCS tool and start browsing, the history is fun.
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Larry McVoy lm at
bitmover.com http://www.bitkeeper.com