So in BSD family tree, there's a 2.9BSD-Seismo and a 2.9.1BSD listed.

Yet I can't seem to find them in the TUHS archive.

There is a 2.9-Patch directory dated 1985 the same as the date that's found in the family tree. Is that the Seismo version?

And Kirk's archive has a 2.9pucc directory, which appears appears to be from Purdue dated1987. How does this relate?

Thanks for any help you can provide