- The Medieval Fortress: Castles, Forts and Walled Cities of the Middle Ages
- The Medieval Fortress: Castles, Forts and Walled Cities of the Middle Ages
- Fortress Third Reich: German Fortifications and Defense Systems in World War II
- Fortress America: The Forts That Defended America 1600 to the Present
- Fortifications of the Incas: 1200-1531 (Fortress)
- J.E. Kaufmann
- Robert M. Jurga
- Richard W. Hazlett
- Frederick C. Matthews
- Michael J Rhein
- Alessandra Celletti
- William Withuhn
- Robert E. Ball
- William F. Trimble
- Raymond W. Prouty
- Grujica S. Ivanovich
- Ettore Perozzi
- John Demont
- William H. Heiser
- Wentworth Folkins
- Richard T. Gedney
- B.C. Colley
- Michael Rice
- Sarah C. Maza
- Mac Johnston