- The Otterbein Hymnal - For Use in Public and Social Worship (English) by Lorenz, Edmund S.
- Otto of the Silver Hand (English) by Pyle, Howard
- Oude Egyptische Legenden (Dutch) by Murray, M. A.
- Oulua soutamassa (Finnish) by Pakkala, Teuvo
- Our American Cousin (English) by Taylor, Tom
- Our Boys - Entertaining Stories by Popular Authors (English) by Various
- Our Catholic Heritage in English Literature of Pre-Conquest Days (English) by Hickey, Emily
- Our Changing Constitution (English) by Pierson, Charles Wheeler
- Our Churches and Chapels (English) by Atticus
- Our Day - In the Light of Prophecy (English) by Spicer, William Ambrose
- Our Deportment - Or the Manners, Conduct and Dress of the Most Refined Society (English) by Young, John H.
- Our Elizabeth - A Humour Novel (English) by Kilpatrick, Florence A. (Florence Antoinette)
- Our Farm of Four Acres and the Money we Made by it (English) by Coulton, Miss
- Our Foreigners - A Chronicle of Americans in the Making (English) by Orth, Samuel P.
- Our Friend John Burroughs (English) by Barrus, Clara
- Our Friend the Charlatan (English) by Gissing, George
- Our Friend the Dog (English) by Alden, Cecil
- Our Friend the Dog (English) by Maeterlinck, Maurice
- Our Friend the Dog (English) by Teixeira de Mattos, Alexander
- Our Gift (English) by Teachers of the School Street Universalist Sunday School, Boston
- Our Government: Local, State, and National: Idaho Edition (English) by James, J.A.
- Our Holidays - Their Meaning and Spirit; retold from St. Nicholas (English) by Various
- Our Hundred Days in Europe (English) by Holmes, Oliver Wendell
- Our Lady Saint Mary (English) by Barry, J. G. H.
- Our Legal Heritage (English) by Reilly, S. A.
- Our Legal Heritage, 5th Ed. (English) by Reilly, S. A.
- Our Legal Heritage : 600-1776 King Aehelbert - King George III (English) by Reilly, S. A.
- Our Little Korean Cousin (English) by Pike, Henry Lee Mitchell
- Our Master - Thoughts for Salvationists about Their Lord (English) by Booth, Bramwell
- Our Mr. Wrenn, the Romantic Adventures of a Gentle Man (English) by Lewis, Sinclair
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