- On Jewish Folklore
- On Killing
- On Killing Remotely
- On Liberty
- On Life, Death, and Suicide: Lessons for Better Mental Health from the History of Psychology, Theolo...
- On Lincoln
- On Looking Into the Abyss
- On Lynchings
- On l’appelait Belgique
- On Meteorites, or Celestial Stones
- On Mexican Time
- On Ops
- On Our Doorstep
- On Our Own Strength
- On Paper
- On Paths of Ash
- On Patrol With the SAS
- On Political War
- On Revolution
- On Roads
- On Rue Tatin
- On Saudi Arabia
- On Saying Whatever
- On Shattered Ground
- On Slavery and Abolitionism
- On Spartan Wings
- On Strategy
- On Target: Organizing and Executing the Strategic Air Campaign Against Iraq, The USAF in the Persian...
- On That Day
- On The Alexandrian War
- On the Anzac trail; being extracts from the diary of a New Zealand sapper, by "Anzac"
- On the Art of War
- On The Block: Rocks, Rabbits and Reptiles
- On the Border With Crook
- On the Border with Crook
- On The Border With Crook
- On the Border with Crook
- On the Border with Mackenzie
- On the Border with Crook
- On the Border with Mackenzie
- On the Bottom
- On the Brink
- On the Choice of Books
- On the Constitutionality of a National Bank
- On the Courthouse Lawn
- On the Cusp
- On the Deck or in the Drink
- On the Edge of Flight
- On the Edge of History
- On The Eve
- On the Eve
- On the Evolution of the Family
- On the Far Bank: The Effects of Gap Crossing on Operational Reach - Studies of Three Large-scale, Op...
- On the Fascination of Objects
- On the Fly: Israeli Airpower against the Al-Aqsa Intifada, 2000-2005 - Israeli Air Force (IAF) and I...
- On the Fly: The First Years of Cincinnati Baseball 1866-1870