The New Student's Reference Work/Vol III:19

Ord — Osceola	Oshkosh — 0ttoman	Ottumwa — Oyama	Oyster — Ozone
Ord, Edward Otho Cresap Ordinance of 1787, The Oregon Orestes Organ Origen Orinoco Oriole Orion (mythology) Orion (constellation) Orzaba Orkney Islands Orleans Orléans, Duke of Orléans, Louis Philippe Joseph Ornithology Orontes Orpheus Orsini, Felice Ortolan Osage Orange Osages Osaka Oscar II, Frederic Osceola	Oshkosh, Wis. Osier Osiris Oskaloosa, Ia. Osler, William Osman Digna Osman Nubar Osprey Ossian Ostend Osteopathy Ostrich Oswego, N. Y. Othello Otho I Otis, Elwell Stephen Otis, Harrison Gray Otis, James Ottawa, Ont. Ottawa, Ill. Ottawa River, Can. Ottawa, University of Ottawas Otter Otterburn, Battle of Ottoman Empire	Ottumwa, Ia. Oudenarde Oudinot, Nicolas Charles Oida Our Mutual Friend Ouzel Ovary Oven-Bird Overbeck, Friedrich Johann Overtones Ovid (Publius Ovidius Naso) Ovulary Ovule Owen, Sir Richard Owen Sound, Can. Owensboro, Ky. Owosso, Mich. Owl Oxalis Oxford Oxford, O. Oxford, University of Oxus Oxygen Oyama, Marquis Iwao	Oyster Ozark Mountains Oziums Ozone