 In May 2007, he donated his archive to the department of Rare Books and Special Collections at Northern Illinois University.In the Vampire Earth series, aliens from a world known as Kur have taken over the world, destroying human society and enslaving the survivors.The novels follow the life of David Valentine, a young man who enlists with Southern Command, one of the few remnants of the old U.S. government scattered around, as he follows his heart even when it conflicts with orders.