Michael D. George has written over 100 novels for Black Horse under his own name as well as numerous pen names such as Rory Black, Boyd Cassidy, John Ladd, Dean Edwards, Dale Mike Rogers, Walt Keen...ver maisMichael D. George has written over 100 novels for Black Horse under his own name as well as numerous pen names such as Rory Black, Boyd Cassidy, John Ladd, Dean Edwards, Dale Mike Rogers, Walt Keene, Ty Walker. Max Gunn and Roy Patterson.ver menos