On my trip to Manteca, California in April 2011, I was able to wander the cemetery where several of my ancestors are buried. Here are the headstones for my Great-great-great grandparents.
I just came across this blog regarding the release of information for the 1940 Census. I can't wait to be able to look at it. The census will provide some excellent information according to this blog post at Nutfield Genealogy.