YOu are right Joybell. He will also have had literary copyright in his notes: not in the information in them, but in the expression of them.

THe issue about the boundaries of copyright in assemblies of fact is interesting. Where, if reproducing facts from the notes, do you cross the line and reproduce teh selection of facts and the collocation of them? It is touched on in the English case of Ravesncroft -v- Herbert (I was involved in it) but not fully nailed.