Debian archives all of our binaries (and source) here:
Some things built on top of that:
https://manpages.debian.org/man/debsnap https://manpages.debian.org/man/debbisect https://wiki.debian.org/BisectDebian https://metasnap.debian.net/ https://reproduce.debian.net/
The OpenAL source tarball that was imported into Debian as version "0.0.200101102349-1".
Thats an incredibly old version, I think you are going to be out of luck and wonder what you need from it.
That said, a couple things to try though:
Email Dan Helfman <witten@torsion.org> and ask if they have a copy lying around in backups anywhere. They aren't a Debian member any more but incredibly are still posting to the Debian BTS occasionally, as upstream developer of borgmatic.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1056364#10 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1096005#10
Contact the Icculus folks, the CVS server mentioned in debian/copyright of the oldest version of openal on Debian snapshot points to the Icculus server. Won't get you the debian/ directory, but could possibly get you some sort of CVS access.
Yeah, I reached out to Dan a few months back. Unfortunately, didn't have a copy anymore (and they were awesome enough to even check backups, props!). At this point I'd be happy with just the headers, the ones from "0.2001061600-2.3" just a few months later seem different enough.
Not a blocker for what I'm working on, but more of an itch to track down the lost version.
All since ~mid 2005. Unfortunately a tarball I've been looking for was added before then, but replaced before a release was cut (so it's also missing from those archives).