Tonight, for no reason, and not something I have ever done before, he died well before the Internet age, I Googled my Dad. He died in 1984. I discovered some his books are still referenced in an obscure library or so - http://www.worldcat.org/identities/lccn-n87-809900 - not that we knew - he was well-published but never boasted except to say to me once, after your 30th article, who's counting, and who cares? When he mentioned an article he had written for Time Magazine, we went a little crazy, 'Where is it?' 'Why didn't you tell us?', and he simply shrugged, saying he'd written articles for Time before.
It could have been that he simply kept his professional life separate from his family life.
Tonight, on the eve of my mother's passing (whenever it is, a week, a month, a year), I also found an old obituary on his death. It wasn't until after he died reading all the obituaries sent to us from friends and colleagues of his that we realized he was considered a world authority in his field. We knew little of this side of him.
I am unable to paste in the obituary due to the lettering and spacing of the original, so I took a screen capture. I'm posting it in my blog, so that I can find it again.
Obituary in The Association of Exploration Geochemists, Newsletter #48, June 1984
Still damn proud of him.