Oldtown Folks By: Harriet Beecher Stowe

Oliver Wendell Holmes (from Literary Friends and Acquaintance) By: William Dean Howells

Omaha Dwellings, Furniture and Implements By: James Owen Dorsey

On Famine Fever and Some of the Other Cognate Forms of Typhus By: Rudolf Virchow

On Horseback By: Charles Dudley Warner

On Limitations To The Use Of Some Anthropologic Data By: John Wesley Powell

On Propositions: What They Are and How They Mean By: Bertrand Russell

On the Antiquity of the Chemical Art By: James Mactear

On The Art of Reading By: Arthur Thomas Quiller-Couch

On the Banks of the Amazon By: William Henry Giles Kingston

On The Blockade By: Oliver Optic

On the Edge of the War Zone From the Battle of the Marne to the Entrance of the Stars and Stripes By: Mildred Aldrich

On the Equator By: Harry De Windt

On the Execution of Music, and Principally of Ancient Music By: Camille Saint-Saëns

On the Fringe of the Great Fight By: George G. (George Gallie) Nasmith

On the Heels of De Wet By: Lionel James

On the Indian Trail Stories of Missionary Work among Cree and Salteaux Indians By: Egerton Ryerson Young

On the King's Service Inward Glimpses of Men at Arms By: Innes Logan

On the Ruin of Britain By: Unknown

On the Ruin of Britain By: Gildas

On the Spanish Main Or, Some English forays on the Isthmus of Darien. By: John Masefield

On The Structure of Greek Tribal Society: An Essay By: Hugh E. (Hugh Exton) Seebohm

On the Trail of Grant and Lee By: Frederick Trevor Hill

Once Upon a Time in Connecticut By: Caroline Clifford Newton

One Hundred Years In Yosemite: The Story Of A Great Park And Its Friends By: Carl Parcher Russell

One Way Out A Middle-class New-Englander Emigrates to America By: William Carleton

One Young Man The simple and true story of a clerk who enlisted in 1914, who fought on the western front for nearly two years, was severely wounded at the battle of the Somme, and is now on his way back to his desk. By: J. E. (John Ernest) Hodder-Williams

Ontario Teachers' Manuals: History By: Ontario. Ministry of Education

Operas Every Child Should Know Descriptions of the Text and Music of Some of the Most Famous Masterpieces By: Mary Schell Hoke Bacon

Oracles of Nostradamus By: Charles A. Ward

Orange and Green A Tale of the Boyne and Limerick By: George Alfred Henty

Oration by Frederick Douglass Delivered on the Occasion of the Unveiling of the Freedmen's Monument, April 14, 1876 By: Frederick Douglass