Appel, Allen
Chronological Checklist
- Time after Time (New York: Carroll and Graf, 1985)
- Twice Upon a Time (New York: Carroll and Graf, 1988)
- Till the End of Time (New York: Doubleday, 1990)
- Hellhound (New York: Avon Books, 1994) with Craig Roberts
- In Time of War (New York: Carroll and Graf, 2003)