- Old Chants
- Old Salt Kossabone
- Old War-Dreams
- O Living Always, Always Dying
- O Magnet-South
- Omnibus Jaunts and Drivers
- One Hour of Madness by Tangerine Dream prod. by Edgar Froese
- One Hour to Madness and Joy
- One of the Human Kinks
- One's-Self I Sing [Redundant]
- One Thought Ever at the Fore by Ernst Bacon
- On Journeys Through the States
- Only a New Ferry Boat
- On, on the Same, Ye Jocund Twain!
- On the Beach at Night
- On to Denver—A Frontier Incident
- Opening of the Secession War
- Orange Buds by Mail from Florida
- Osceola
- O Star of France [1870-71]