A Groklaw contributor has managed to legally obtain the sealed 1994 settlement between USL (Unix Systems Laboratory) and The Regents of the University of California under the Californian Public Records Law.
It’s a long document, and interesting to note that neither side concedes the others claims, but very interesting in the context that during the case USL conceded that they had distributed the V32 UNIX source files with no copyright notice and the judge pointed out that if he had to rule on it then they were very likely to have lost any copyrights for any material in V32!