Ottoman Empire | Order of the British Empire | Russian Empire | Roman Empire | British Empire | Holy Roman Empire | German Empire | Byzantine Empire | Mughal Empire | Austrian Empire | First French Empire | Empire of Japan | Empire State Building | Vijayanagara Empire | Suez Crisis | Spanish Empire | Boardwalk Empire | Empire | Mongol Empire | Cuban Missile Crisis | 1973 oil crisis | Second French Empire | Order of the Indian Empire | Cuban missile crisis | Portuguese Empire | Achaemenid Empire | Parthian Empire | Maratha Empire | Western Roman Empire | Seleucid Empire |
He has also contributed one title, An Honorable Defense (1988), to the Crisis of Empire series (with David Drake), and the novelette Hey Diddle Diddle to the fifth installment of the Man-Kzin Wars series (based in the Known Space Universe of Larry Niven).