ifctfvax.harhan.org/Quasijarus Archive.org kind of has a snapshot, but nothing for the files.
I put what I have onto sourceforge, since they have all my other unix stuff online…
Thanks to our readers the site has been saved!
qjsrc-se53pra0.tar.gz is the source SCCS reconstruction
And here is the 4.3BSD-Quasijarus0c release.