• O'Brien, Frank George: Minnesota Pioneer Sketches (HTML and page images at LOC)
  • O'Callaghan, Joseph F.: The Cortes of Castile-León, 1188-1350 (frame-dependent HTML at Libro)
  • O'Connor, Elizabeth: My Beloved South (HTML and TEI at UNC)
  • O'Connor, Patrice M.: Hospice and Palliative Care: Questions and Answers, also by Virginia F. Sendor (frame and cookie-dependent page images at Scarecrow Press)
  • O'Donnell, James J.: Augustine (HTML here at Penn)
  • O'Donnell, James J.: Cassiodorus (HTML here at Penn)
  • O'Donnell, James J., ed.: Confessions, by Saint Augustine (HTML here at Penn)
  • O'Farrell, Brigid, ed.: Work and Family: Policies for a Changing Work Force, also ed. by Marianne A. Ferber and La Rue Allen (page images at NAP)
  • O'Hagan, John, trans.: The Song of Roland (HTML at Fordham)
  • O'Keefe, Adelaide: Little Ann and Other Poems, also by Jane Taylor and Ann Taylor, illust. by Kate Greenaway (illustrated HTML at Celebration of Women Writers)
  • O'Neal, William: Life and History of William O'Neal; or, The Man Who Sold His Wife (St. Louis: A.R. Fleming, 1896) (HTML and TEI at UNC)
  • O'Neill, Eugene: Beyond the Horizon (HTML at Bartleby)
  • O'Neill, Eugene: The Hairy Ape (HTML at eoneill.com)
  • O'Neill, John: Prodigal Genius: The Life of Nikola Tesla (HTML at brotherhoodoflife.com)
  • O'Neill, Neville, illust.: How to Stuff Up a Small Business, by Gavin Byrne and Keith Sutton (illustrated HTML in Australia)
  • O'Reilly, Augustine J.: Alvira: The Heroine of Vesuvius (Gutenberg text)
  • O'Reilly, Peter, trans.: St. Thomas Aquinas (1958 edition), by Jacques Maritain, also trans. by Joseph W. Evans (HTML at Notre Dame)
  • O Foghlu, Micheal: Perl 5 Quick Reference (delisted: Que books no longer directly accessible)
  • Oakes, Jeannie: Educational Matchmaking: Academic and Vocational Tracking in Comprehensive High Schools, also by Molly Selvin, Lynn A. Karoly, and Gretchen Gulton (PDF files at rand.org)
  • Oaks, Stanley C., ed.: Emerging Infections: Microbial Threats to Health in the United States, also ed. by Joshua Lederberg and Robert E. Shope (page images at NAP)
  • Observer: "Greenbacks" (page images at MOA)
  • Ockman, Sam, ed.: Open Sources: Voices from the Open Source Revolution, also ed. by Chris DiBona and Mark Stone (HTML at oreilly.com)
  • Odell, Margaretta Matilda: Memoir and Poems of Phillis Wheatley, a Native African and Slave (Boston: Published by Geo. W. Light, 1834), also by Phillis Wheatley (illustrated HTML and TEI at UNC)
  • Ofari, Earl: Black Liberation (Cultural and Revolutionary Nationalism) (page images at MSU)
  • Ofcansky, Thomas P., ed.: Ethiopia: A Country Study, also ed. by LaVerle Berry (HTML at LOC)
  • Offenbach, Jacques: The Grand Duchess of Gerolstein (libretto), also by Adrian Ross and Charles H. E. Brookfield (text at idbsu.edu)
  • Office of Management and Budget: Record Linkage Techniques 1997: Proceedings of an International Workshop and Exposition, also by National Research Council Committee on Applied and Theoretical Statistics (page images at NAP)
  • Offley, Greensbury Washington: A Narrative of the Life and Labors of the Rev. G. W. Offley, A Colored Man, Local Preacher and Missionary (1859) (HTML and TEI at UNC)
  • Ogden, John: The Science of Education, and Art of Teaching (page images at MOA)
  • Ogden, Peter Skene: Snake Country Journals (HTML at xmission.com)
  • Ogden, Ruth: Tattine (Gutenberg text)
  • Ogle, William, trans.: On the Parts of Animals, by Aristotle (HTML at Internet Classics)
  • Ohio: Report of the Debates and Proceedings of the Convention for the Revision of the Constitution of the State of Ohio. 1850-51 (page images at MOA)
  • Ohlgren, Thomas, ed.: Robin Hood and Other Outlaw Tales, also ed. by Stephen Knight (HTML at Rochester)
  • Ojemann, George A.: Conversations with Neil's Brain: The Neural Nature of Thought and Language, also by William H. Calvin (HTML at Washington)
  • Okakura, Kakuzo: The Book of Tea
    • HTML at takase.com
    • Gutenberg text
  • Okerson, Ann, ed.: Gateways, Gatekeepers, and Roles in the Information Omniverse, also ed. by Dru Mogge (HTML at cni.org)
  • Okerson, Ann, ed.: Scholarly Publishing on the Electronic Networks: The New Generation: Visions and Opportunities in Not-for-Profit Publishing (HTML at cni.org)
  • Okumura, Ichiro: Awakening to Prayer, trans. by Masaru Yamato and Kazue Hiraki (HTML in Austria)
  • Olasky, Marvin: Prodigal Press: The Anti-Christian Bias of the American News Media (HTML at worldmag.com)
  • Olasky, Marvin: Telling the Truth: How to Revitalize Christian Journalism (HTML at worldmag.com)
  • Olcott, Frances Jenkins, ed.: Good Stories for Great Holidays (HTML at Virginia)
  • Older, Fremont: My Own Story (HTML at LOC)
  • Oldmixon, John: Reflections on Dr. Swift's letter to the Earl of Oxford, about the English Tongue (HTML at Virginia)
  • Olesch, Gunther, trans.: My Life and My Efforts, by Karl Friedrich May
    • Gutenberg text; unofficial until 31 Aug 2001
    • Gutenberg HTML; unofficial until 31 Aug 2001
  • Oliphant, Margaret: A Beleaguered City (1900 edition) (HTML at Gaslight)
  • Oliphant, Margaret: Jeanne d'Arc: Her Life and Death
    • Gutenberg ASCII text; unofficial until 31 Mar 2001
    • Gutenberg 8-bit text; unofficial until 31 Mar 2001
  • Olitzky, Kerry M.: Jewish Mourner's Handbook, also by Ron H. Isaacs (HTML at jewishfunerals.com)
  • Olive, Johnson: One of the Wonders of the Age: or, The Life and Times of Rev. Johnson Olive (HTML and TEI at UNC)
  • Oliver, Raymond: Why is the Colonel Called "Kernal"? The Origin of the Ranks and Rank Insignia Now Used by the United States Armed Forces (illustrated HTML at navy.mil)
  • Ollivant, Alfred: Bob, Son of Battle (Gutenberg text; unofficial until 30 Sep 2001)
  • Olmsted, Frederick Law: A Journey Through Texas: or, A Saddle-Trip on the Southwestern Frontier (page images at MOA)
  • Olson, Elizabeth: Alan Simpson's Easy Guide to Windows 95, also by Alan Simpson (page images at iuniverse.com)
  • Olson, Kerry: Using Technology to Support Education Reform, also by Barbara Means, John Blando, Teresa Middleton, Catherine Cobb Morocco, Arlene R. Remz, and Judith Zorfass (HTML at ed.gov)
  • Olson, Nancy B., ed.: Cataloging Internet Resources: A Manual and Practical Guide (second edition) (HTML at OCLC)
  • Olson, Steve: Shaping the Future: Biology and Human Values (page images at NAP)
  • Olson, Toby: Aesthetics (HTML at Light and Dust)
  • Omori, Annie Shepley, trans.: Diaries of Court Ladies of Old Japan, by Lady Murasaki Shikibu, Izumi Shikibu, and Anonymous (11th Century Japan), also trans. by Kochi Doi (illustrated HTML at Celebration of Women Writers)
  • Ondaatje, Elizabeth: Combining Service and Learning in Higher Education: Evaluation of the Learn and Serve America Higher Education Program, also by Maryann J. Gray, Ronald Fricker, Sandra A. Geschwind, Charles A. Goldman, Tessa Kaganoff, Abby E. Robyn, Melora Sundt, Lori Vogelgesang, and Stephen P. Klein (PDF files at rand.org)
  • Ongkosongo, Otto S. R.: Environmental Changes on the Coasts of Indonesia, also by Eric C. F. Bird (HTML at UNU Press)
  • Oosterink, Henk: Spirit in Crisis (HTML at theosophy-nw.org)
  • Opie, Amelia Anderson: The Warrior's Return, and Other Poems (HTML at UC Davis)
  • Opler, Paul A.: Butterflies of North America, also by Harry Pavulaan and Ray E. Stanford (illustrated HTML at USGS)
  • Opler, Paul A.: Moths of the United States, also by Michael J. Smith and Richard S. Peigler (illustrated HTML at USGS)
  • Oppenheim, E. Phillips: The Devil's Paw (Gutenberg text; unofficial until 31 Aug 2001)
  • Oppenheim, E. Phillips: Havoc (Gutenberg text)
  • Oppenheim, E. Phillips: The Illustrious Prince (Gutenberg text)
  • Oppenheim, E. Phillips: The Kingdom of the Blind (Gutenberg text)
  • Oppenheim, E. Phillips: The Malefactor (Gutenberg text)
  • Oppenheim, E. Phillips: A Millionaire of Yesterday (Gutenberg text)
  • Oppenheim, E. Phillips: Peter Ruff and the Double-Four (Gutenberg text)
  • Oppenheim, E. Phillips: The Vanished Messenger (Gutenberg text)
  • Oppenheim, E. Phillips: The Yellow Crayon (Gutenberg text)
  • Oppenheim, E. Phillips: The Zeppelin's Passenger (Gutenberg text)
  • Optic, Oliver: Poor and Proud, or the Fortunes of Katy Redburn
    • illustrated HTML at Virginia
    • Gutenberg text
  • Orcutt, Hiram: The Parents' Manual: or, Home and School Training (page images at MOA)
  • Orczy, Baroness (see Orczy, Emmuska)
  • Orczy, Emmuska: El Dorado: An Adventure of the Scarlet Pimpernel (Gutenberg text)
  • Orczy, Emmuska: The Elusive Pimpernel (Gutenberg text; unofficial until 31 Aug 2001)
  • Orczy, Emmuska: The Scarlet Pimpernel
    • HTML at CMU
    • Gutenberg text
  • Oregon State Board of Emigration: The Pacific Northwest (New York, 1882) (page images at LOC)
  • Origen: Against Celsus (8 books; commentary appears between Book IV and Book V) (HTML with commentary at CCEL)
  • Origen: De Principiis (HTML with commentary at CCEL)
  • Orleans, Leo A.: Chinese Students in America: Policies, Issues, and Numbers (page images at NAP)
  • Ormsby, John, trans.: Don Quixote, by Miguel de Cervantes (Gutenberg text)
  • Orr, Alexandra: Life and Letters of Robert Browning (second edition) (Gutenberg text)
  • Orr, James: The Christian View of God and the World as Centering in the Incarnation: B (HTML at CCEL)
  • Ortega y Gasset, José: The Revolt of the Masses (delisted by request of copyright holder)
  • Osberg, Richard H., ed.: The Poems of Laurence Minot, 1333-1352, by Laurence Minot (HTML at Rochester)
  • Osborn, J. W.: The Industrial Interests of California (page images at MOA)
  • Osborne, Dorothy: Letters from Dorothy Osborne to Sir William Temple (1652-54), ed. by Edward Abbott Parry (illustrated HTML at Celebration of Women Writers)
  • Osborne, George A.: Examples of Differential Equations, With Rules for Their Solution (frame- and JavaScript-dependent page images at Cornell)
  • Osbourne, Lloyd: The Ebb-Tide, also by Robert Louis Stevenson (Gutenberg text)
  • Osbourne, Lloyd: The Wrecker, also by Robert Louis Stevenson (Gutenberg text)
  • Osbourne, Lloyd: The Wrong Box, also by Robert Louis Stevenson (Gutenberg text)
  • Osgood, Charles Grosvenor, ed.: Boswell's Life of Johnson, Abridged and Edited, by James Boswell (Gutenberg text)
  • Osgood, Frances Sargent Locke: Poems (page images at MOA)
  • Osgood, Lucius, ed.: Osgood's American Third Reader: For Schools and Families (Pittsburgh : A.H. English & Co., c1871) (page images at Pitt)
  • Osgood, Lucius, ed.: Osgood's Progressive Fifth Reader (Pittsburgh : A.H. English & Co., c1858) (page images at Pitt)
  • Osgood, Samuel: Mile Stones in our Life-Journey (page images at MOA)
  • Osler, William: The Evolution of Modern Medicine
    • HTML at Virginia
    • Gutenberg text
  • Osmer, Samantha J., ed.: Calibrating Hubble Space Telescope: Proceedings of a Workshop Held at the Space Telescope Science Institute, Baltimore, Maryland, November 15-17, 1993, also ed. by J. Chris Blades (Postscript files at stsci.edu)
  • Ossendowski, Ferdinand: Beasts, Men and Gods (Gutenberg text)
  • Osten, Hans Henning van der: Ancient Oriental Seals in the Collection of Mr. Edward T. Newell (page images at Chicago)
  • Oster, Clinton V., ed.: Taking Flight: Education and Training for Aviation Careers, also ed. by Janet S. Hansen (page images and partial HTML at NAP)
  • Osterhage, Scott J., ed.: Collation of Theosophical Glossaries (HTML at theosophy-nw.org)
  • Osterweis, Marian, ed.: Bereavement: Reactions, Consequences, and Care, also ed. by Fredric Solomon and Morris Green (page images at NAP)
  • Ostrom, Kurre W.: Massage and the Original Swedish Movements (illustrated HTML at Virginia)
  • Othman, Rafiqa: Three Mothers, Three Daughters: Palestinian Women's Stories, also by Michael Gorkin (HTML at UC Press)
  • Otis, Charles Pomeroy, trans.: Voyages of Samuel De Champlain, by Samuel de Champlain, contrib. by Edmund F. Slafter
    • volume I: page images at canadiana.org
    • volume II: page images at canadiana.org
    • volume III: page images at canadiana.org
  • Otis, James: Inland Waterways: or, The Cruise of the Restless (HTML at Naked Word)
  • Otway, Thomas: The History and Fall of Caius Marius (1680) (frame- and cookie-dependent page images here at Penn)
  • Otway, Thomas: Venice Preserved (searchable HTML at Bibliomania)
  • Oudemans, A. C.: The Great Sea-Serpent: An Historical and Critical Treatise (based on the 1892 edition) (PDF at herper.com)
  • Ouida: A Dog of Flanders (HTML at Naked Word)
  • Ouida: A Dog of Flanders, and Other Stories (illustrated HTML at Indiana)
  • Ouida: Folle-Farine (HTML at Indiana; 1.3 MB)
  • Ouida: The Nurnberg Stove (HTML at Naked Word)
  • Ouida: Signa
    • volume 1: HTML at Indiana
    • volume 2: HTML at Indiana
    • volume 3: HTML at Indiana
  • Ouida: A Village Commune
    • volume 1: HTML at Indiana
    • volume 2: HTML at Indiana
  • Outler, Albert, trans.: Confessions, by Saint Augustine (HTML at CCEL)
  • Outler, Albert, trans.: Enchiridion, by Saint Augustine (HTML at CCEL)
  • Overell, Bette: Animal Research Takes Lives: Humans and Animals Both Suffer (1993) (HTML in New Zealand)
  • Overmyer, James: Queen of the Negro Leagues: Effa Manley and the Newark Eagles (frame and cookie-dependent page images at Scarecrow Press)
  • Ovid: Metamorphoses (HTML at Internet Classics; END MISSING)
  • Ovid: Metamorphoses (London: William Seres, 1567), trans. by Arthur Golding (frame- and cookie-dependent page images here at Penn)
  • Ovid: Ovid's Elegies, trans. by Christopher Marlowe (HTML at Perseus)
  • Owen, John: A Brief Declaration and Vindication of the Doctrine of the Trinity (text at CCEL)
  • Owen, John: Christologia (text at CCEL)
  • Owen, John: The Doctrine of Justification by Faith (text at CCEL)
  • Owen, John: Gospel Grounds and Evidences of the Faith of God's Elect (text at CCEL)
  • Owen, John: Meditations and Discourses on the Glory of Christ
    • part 1: text at CCEL
    • part 2: text at CCEL
  • Owen, John: Of Communion with God the Father, Son, and Holy Ghost (text at CCEL)
  • Owen, John: Of Temptation (HTML at CCEL)
  • Owen, John: Of the Mortification of Sin in Believers (HTML at reformed.org)
  • Owen, John: A Practical Exposition of Psalm CXXX (HTML at reformed.org)
  • Owen, John: Two Short Catechisms (text at CCEL)
  • Owen, John: A Vindication of Some Passages in a Discourse Concerning Communion with God (text at CCEL)
  • Owen, Maureen: The No-Travels Journal (HTML at Light and Dust)
  • Owen, Robert: A New View of Society (text at McMaster)
  • Owen, Wilfred: Poems (Gutenberg text)
  • Owens, Rochelle: Not Be Essence That Cannot Be (with additional poems) (at Light and Dust)
  • Owens, Tom: The Diverse Forms of Tech-Prep: Implementation Approaches in Ten Local Consortia, also by Alan M. Hershey and Marsha K. Silverberg (HTML at ed.gov)
  • Ozanam, Jacques: Recreations in Science and Natural Philosophy, also by Edward Riddle, trans. by Charles Hutton (frame- and JavaScript-dependent page images at Cornell)