Was this during the time they had Guthrie come explore the house to help explain away some of David's "irrational" fears? It would be interesting to think that he found more than he mentioned, and that those things included what Joeytrom listed above. This would be a good tidbit to potentially include in the new version of DS, if it makes it to air, that some character or other found a notebook of Dr. Guthrie listing some crazy things that he uncovered inside of Collinwood, and that leads this character to want to investigate these claims.