Don't forget that at the height of the Moral Majority in Reagan america, the Religious Right got the Cthulu Mythos dropped from AD&D's Deities and Demigods. only the first addition had it.
My brothers and I had the first edition, but it was stolen in the way that everything you own in High School is stolen. I saw one at Powell's Bookstore in Portland for $150. It was so cool, the nostalgia so strong, that I nearly bought it on the spot. However, my girlfriend would have killed me.