| Nordhoff, Charles Bernard | The Dark River | 1938 |
| Nordhoff, Charles Bernard | The High Barbaree | 1945 |
| Nordhoff, Charles Bernard | The Hurricane | 1936 |
| Nordhoff, Charles Bernard | The Pearl Lagoon | 1924 |
| Norris, Charles Gilman | Seed | 1930 |
| Norris, Kathleen Thompson | Barberry Bush | 1926 |
| Norris, Kathleen Thompson | Bread into Roses | 1936 |
| Norris, Kathleen Thompson | Butterfly | 1923 |
| Norris, Kathleen Thompson | Little Ships | 1925 |
| Norris, Kathleen Thompson | Lost Sunrise | 1939 |
| Norris, Kathleen Thompson | Second Hand Wife | 1931 |
| Norris, Kathleen Thompson | Storm House | 1928 |
| Norris, Kathleen Thompson | The Lucky Lawrences | 1930 |
| Norris, Kathleen Thompson | The Sea Gull | 1925 |
| Norris, Kathleen Thompson | Younger Sister | 1928 |
| Norway, Nevil Shute | A Town Like Alice [The Legacy] | 1952 |
| Norway, Nevil Shute | An Old Captivity | 1940 |
| Norway, Nevil Shute | Beyond the Black Stump | 1956 |
| Norway, Nevil Shute | In the Wet | 1953 |
| Norway, Nevil Shute | Landfall | 1940 |
| Norway, Nevil Shute | Lonely Road | 1932 |
| Norway, Nevil Shute | Marazan | 1926 |
| Norway, Nevil Shute | Most Secret | 1945 |
| Norway, Nevil Shute | No Highway | 1948 |
| Norway, Nevil Shute | On the Beach | 1957 |
| Norway, Nevil Shute | Ordeal [What Happened to the Corbetts] | 1939 |
| Norway, Nevil Shute | Pastoral | 1944 |
| Norway, Nevil Shute | Pied Piper | 1942 |
| Norway, Nevil Shute | Round the Bend | 1951 |
| Norway, Nevil Shute | Ruined City [Kindling] | 1938 |
| Norway, Nevil Shute | So Disdained [The Mysterious Aviator] | 1928 |
| Norway, Nevil Shute | Stephen Morris & Pilotage | 1961 |
| Norway, Nevil Shute | The Breaking Wave [Requiem for a WREN] | 1955 |
| Norway, Nevil Shute | The Chequer Board | 1947 |
| Norway, Nevil Shute | The Far Country | 1952 |
| Norway, Nevil Shute | The Legacy [A Town Like Alice] | 1950 |
| Norway, Nevil Shute | The Rainbow and the Rose | 1958 |
| Norway, Nevil Shute | Trustee from the Toolroom | 1960 |
| Norway, Nevil Shute | Vinland the Good | 1946 |
| Notman, William McFarlane | Through Mountains and Canyons - The Canadian Rockies | 1906 |
| Noyce, Elisha | The Boy's Book of Industrial Information | 1858 |
| Noyes, Alfred | Songs of Shadow-of-a-Leaf and Other Poems | 1924 |
| Noyes, Alfred | The Last Man | 1941 |
| Noyes, Alfred | The Sun Cure [The Return of the Scare-Crow] | 1929 |
| Noyes, Alfred | The Torch-Bearers | 1937 |
| Nutt, Charles Leroy | The Man Who Made Himself | 1957 |
| Nuttall, Charles | Dave Porter in the Far North; Or, The Pluck of an American Schoolboy (Dave Porter #4) | 1908 |
| Nutting, Herbert Chester | Ad Alpēs. A Tale of Roman Life | 1923 |
| O'Brien, David Wright | Bill of Rights, 5000 AD | 1941 |
| O'Brien, David Wright | Blitzkrieg in the Past | 1942 |
| O'Brien, David Wright | Rayhouse in Space | 1941 |
| O'Brien, David Wright | Squadron of the Damned | 1942 |
| O'Connor, Flannery | The violent bear it away | 1955 |
| O'Connor, Flannery | Wise Blood | 1949 |
| O'Connor, Monsignor John | Father Brown on Chesterton | 1937 |
| O'Connor, William Douglas | The Good Gray Poet. A Vindication. | 1866 |
| O'Duffy, Eimar Ultan | The Bird Cage | 1932 |
| O'Hagan, Thomas | Essays Literary, Critical and Historical | 1909 |
| O'Hagan, Thomas | Father Morice | 1928 |
| O'Hagan, Thomas | Intimacies in Canadian Life and Letters | 1927 |
| O'Hagan, Thomas | Songs of Heroic Days | 1916 |
| O'Hagan, Thomas | Songs of the Settlement and Other Poems | 1899 |
| O'Higgins, Harvey J. | Stop Thief | 1925 |
| O'Higgins, Harvey J. | The Man With the Blue Nose | 1925 |
| O'Keeffe, John | Fontainebleau | 1784 |
| O'Keeffe, John | The Castle of Andalusia | 1782 |
| O'Keeffe, John | The Farmer, from A Collection of Farces and Other After-Pieces | 1815 |
| O'Keeffe, John | The Highland Reel | 1815 |
| O'Keeffe, John | The London Hermit | 1798 |
| O'Keeffe, John | The Poor Soldier | 1815 |
| O'Keeffe, John | The Prisoner at Large | 1815 |
| O'Keeffe, John | Wild Oats | 1793 |
| O'Nolan, Brian | At Swim-two-birds | 1939 |
| O'Nolan, Brian | The Dalkey Archive | 1964 |
| O'Nolan, Brian | The Hard Life: An Exegesis of Squalor | 1961 |
| O'Nolan, Brian | The Third Policeman | 1967 |
| O'Shea, Katharine | Charles Stewart Parnell: His Love Story and Political Life | 1914 |
| Oblinger, Milo Milton | Dick Kent at Half Way House (Dick Kent #7) | 1929 |
| Oblinger, Milo Milton | Dick Kent, Fur Trader (Dick Kent #4) | 1927 |
| Oblinger, Milo Milton | The Valdmere Mystery or The Atomic Ray | 1929 |
| Odlum, Jerome | The Mirabilis Diamond | 1945 |
| Ogilvie, Will H. (Henry) | Fair Girls and Gray Horses with Other Verses | 1914 |
| Olcott, William Tyler | Sun Lore of All Ages | 1914 |
| Oliphant, Margaret | A Country Gentleman and His Family | 1886 |
| Oliphant, Margaret | A Widow's Tale and other stories | 1898 |
| Oliphant, Margaret | At His Gates, Volume 1 | 1872 |
| Oliphant, Margaret | At His Gates, Volume 2 | 1872 |
| Oliphant, Margaret | At His Gates, Volume 3 | 1872 |
| Oliphant, Margaret | Hester: A Story of Contemporary Life. Vol I of III | 1883 |
| Oliphant, Margaret | Hester: A Story of Contemporary Life. Vol II of III | 1883 |
| Oliphant, Margaret | Hester: A Story of Contemporary Life. Vol III of III | 1883 |
| Oliphant, Margaret | It was a Lover and his Lass | 1883 |
| Oliphant, Margaret | Kirsteen, Volume 1 | 1890 |
| Oliphant, Margaret | Kirsteen, Volume 2 | 1890 |
| Oliphant, Margaret | Kirsteen, Volume 3 | 1890 |
| Oliphant, Margaret | Phoebe, Junior | 1876 |
| Oliphant, Margaret | Sir Tom | 1883 |
| Oliphant, Margaret | The Ladies Lindores, Volume 1 | 1883 |
| Oliphant, Margaret | The Ladies Lindores, Volume 2 | 1883 |
| Oliphant, Margaret | The Ladies Lindores, Volume 3 | 1883 |
| Oliphant, Margaret | The Marriage of Elinor | 1892 |
| Oliphant, Margaret | The Rector and The Doctor's Family | 1863 |
| Oliphant, Margaret | The Wizard's Son, Volume 1 | 1884 |
| Oliphant, Margaret | The Wizard's Son, Volume 2 | 1884 |
| Oliphant, Margaret | The Wizard's Son, Volume 3 | 1884 |
| Oliver, Frederick Scott | The Endless Adventure Vol 1 | 1930 |
| Oliver, Frederick Scott | The Endless Adventure Vol 2 | 1930 |
| Oliver, Frederick Scott | The Endless Adventure Vol 3 | 1935 |
| Onstott, Kyle | Mandingo | 1957 |
| Opie, Amelia Alderson (née Alderson) | A Wife's Duty, A Tale. | 1847 |
| Opie, Amelia Alderson (née Alderson) | A Woman's Love, from "The Works of Mrs. Amelia Opie, Volume III" | 1848 |
| Opie, Amelia Alderson (née Alderson) | Temper | 1848 |
| Opie, Amelia Alderson (née Alderson) | The Father and Daughter | 1824 |
| Oppenheim, E. Phillips | A Daughter of the Marionis [To Win the Love He Sought] | 1895 |
| Oppenheim, E. Phillips | A Lost Leader | 1906 |
| Oppenheim, E. Phillips | A Maker of History | 1905 |
| Oppenheim, E. Phillips | A Master of Men [Enoch Strone] | 1901 |
| Oppenheim, E. Phillips | A Monk of Cruta [The Tragedy of Adrea] | 1906 |
| Oppenheim, E. Phillips | Aaron Rodd, Diviner | 1920 |
| Oppenheim, E. Phillips | Advice Limited: A Series of Stories | 1935 |
| Oppenheim, E. Phillips | Ambrose Lavendale, Diplomat | 1920 |
| Oppenheim, E. Phillips | Ask Miss Mott | 1935 |
| Oppenheim, E. Phillips | Berenice | 1907 |
| Oppenheim, E. Phillips | Chronicles of Melhampton | 1928 |
| Oppenheim, E. Phillips | Crooks in the Sunshine | 1933 |
| Oppenheim, E. Phillips | Envoy Extraordinary | 1937 |
| Oppenheim, E. Phillips | Exit A Dictator | 1939 |
| Oppenheim, E. Phillips | False Evidence | 1911 |
| Oppenheim, E. Phillips | Floating Peril [The Bird of Paradise] [The Story Without a Title] | 1935 |
| Oppenheim, E. Phillips | Gabriel Samara, Peacemaker | 1925 |
| Oppenheim, E. Phillips | General Besserley's Second Puzzle Box | 1940 |
| Oppenheim, E. Phillips | General Besserley’s Puzzle Box | 1935 |
| Oppenheim, E. Phillips | Inspector Dickins Retires [Gangster's Glory] | 1931 |
| Oppenheim, E. Phillips | Jacob's Ladder | 1921 |
| Oppenheim, E. Phillips | Jennerton & Co. | 1929 |
| Oppenheim, E. Phillips | Jeremiah and the Princess | 1933 |
| Oppenheim, E. Phillips | Last Train Out | 1940 |
| Oppenheim, E. Phillips | Matorni's Vineyard | 1928 |
| Oppenheim, E. Phillips | Michael's Evil Deeds | 1921 |
| Oppenheim, E. Phillips | Miss Brown of X. Y. O. | 1927 |
| Oppenheim, E. Phillips | Mr. Billingham, the Marquis and Madelon | 1927 |
| Oppenheim, E. Phillips | Mr. Grex of Monte Carlo | 1915 |
| Oppenheim, E. Phillips | Mr. Marx's Secret | 1899 |
| Oppenheim, E. Phillips | Murder at Monte Carlo | 1933 |
| Oppenheim, E. Phillips | Mysterious Mr. Sabin | 1898 |
| Oppenheim, E. Phillips | Nicholas Goade, Detective | 1927 |
| Oppenheim, E. Phillips | Peter Ruff and the Double-Four | 1912 |
| Oppenheim, E. Phillips | Prodigals of Monte Carlo | 1926 |
| Oppenheim, E. Phillips | Recalled by the Double-Four | 1912 |
| Oppenheim, E. Phillips | Sinners Beware | 1932 |
| Oppenheim, E. Phillips | Sir Adam Disappeared | 1939 |
| Oppenheim, E. Phillips | Stolen Idols | 1925 |
| Oppenheim, E. Phillips | The Adventures of Mr. Joseph P. Cray | 1925 |
| Oppenheim, E. Phillips | The Amazing Partnership | 1914 |
| Oppenheim, E. Phillips | The Battle of Basinghall Street | 1935 |
| Oppenheim, E. Phillips | The Channay Syndicate | 1927 |
| Oppenheim, E. Phillips | The Colossus of Arcadia | 1938 |
| Oppenheim, E. Phillips | The Curious Happenings to the Rooke Legatees | 1935 |
| Oppenheim, E. Phillips | The Dumb Gods Speak | 1936 |
| Oppenheim, E. Phillips | The Ex-Detective | 1933 |
| Oppenheim, E. Phillips | The Gallows of Chance | 1933 |
| Oppenheim, E. Phillips | The Golden Beast | 1925 |
| Oppenheim, E. Phillips | The Golden Web | 1911 |
| Oppenheim, E. Phillips | The Grassleyes Mystery | 1940 |
| Oppenheim, E. Phillips | The Hillman | 1917 |
| Oppenheim, E. Phillips | The Inevitable Millionaires | 1919 |
| Oppenheim, E. Phillips | The Interloper [The Ex-Duke] | 1927 |
| Oppenheim, E. Phillips | The Light Beyond | 1928 |
| Oppenheim, E. Phillips | The Magnificent Hoax [Judy of Bunter’s Buildings] | 1935 |
| Oppenheim, E. Phillips | The Man From Sing Sing [Moran Chambers Smiled] | 1932 |
| Oppenheim, E. Phillips | The Man Who Changed His Plea | 1942 |
| Oppenheim, E. Phillips | The Man Without Nerves | 1934 |
| Oppenheim, E. Phillips | The Million Pound Deposit | 1929 |
| Oppenheim, E. Phillips | The Missioner | 1908 |
| Oppenheim, E. Phillips | The Moving Finger [A Falling Star] | 1911 |
| Oppenheim, E. Phillips | The Mystery of Mr Bernard Brown | 1896 |
| Oppenheim, E. Phillips | The Ostrekoff Jewels | 1932 |
| Oppenheim, E. Phillips | The Passionate Quest | 1923 |
| Oppenheim, E. Phillips | The Seven Conundrums | 1923 |
| Oppenheim, E. Phillips | The Spy Paramount | 1935 |
| Oppenheim, E. Phillips | The Spymaster | 1938 |
| Oppenheim, E. Phillips | The Strange Boarders of Palace Crescent | 1934 |
| Oppenheim, E. Phillips | The Strangers' Gate | 1939 |
| Oppenheim, E. Phillips | The Terrible Hobby of Sir Joseph Londe, Bart. | 1927 |
| Oppenheim, E. Phillips | The Traitors | 1902 |
| Oppenheim, E. Phillips | The Treasure House of Martin Hews | 1929 |
| Oppenheim, E. Phillips | The Way of These Women | 1914 |
| Oppenheim, E. Phillips | The Wicked Marquis | 1919 |
| Oppenheim, E. Phillips | The World’s Great Snare | 1900 |
| Oppenheim, E. Phillips | The Wrath to Come | 1924 |
| Oppenheim, E. Phillips | The Zeppelin's Passenger | 1918 |
| Oppenheim, E. Phillips | Up the Ladder of Gold | 1931 |
| Oppenheim, E. Phillips | What Happened to Forester | 1927 |
| Orczy, Baroness Emmuska | A Joyous Adventure | 1932 |
| Orczy, Baroness Emmuska | A Question of Temptation | 1925 |
| Orczy, Baroness Emmuska | Beau Brocade: A Romance | 1912 |
| Orczy, Baroness Emmuska | His Majesty's Well-Beloved: An Episode in the Life of Mr. Thomas Betteron as told by His Friend John Honeywood | 1919 |
| Orczy, Baroness Emmuska | La Capture du Mouron Rouge | 1933 |
| Orczy, Baroness Emmuska | Lady Molly of Scotland Yard | 1910 |
| Orczy, Baroness Emmuska | Le Serment | 1934 |
| Orczy, Baroness Emmuska | Leatherface: A Tale of Old Flanders | 1916 |
| Orczy, Baroness Emmuska | Marivosa | 1930 |
| Orczy, Baroness Emmuska | No Greater Love | 1938 |
| Orczy, Baroness Emmuska | Sir Percy Hits Back (Scarlet Pimpernel #9) | 1927 |
| Orczy, Baroness Emmuska | Sir Percy Leads the Band (Scarlet Pimpernel #2) | 1936 |
| Orczy, Baroness Emmuska | The Celestial City | 1926 |
| Orczy, Baroness Emmuska | The Honourable Jim | 1924 |
| Orczy, Baroness Emmuska | The Triumph of the Scarlet Pimpernel (Scarlet Pimpernel #10) | 1922 |
| Orczy, Baroness Emmuska | The Turbulent Duchess | 1935 |
| Orczy, Baroness Emmuska | The Uncrowned King | 1935 |
| Orléans, Charlotte-Elisabeth, duchesse d' | Die Briefe der Liselotte von der Pfalz, Herzogin von Orleans | 1923 |
| Orzeszkowa, Eliza | Babunia | 1907 |
| Orzeszkowa, Eliza | Panna Antonina | 1907 |
| Orzeszkowa, Eliza | Panna Róża | 1909 |
| Ossip-Lourié | La philosophie russe contemporaine | 1902 |
| Ossip-Lourié | Pensées de Tolstoï | 1898 |
| Ostenso, Martha | A Far Land | 1924 |
| Ostenso, Martha | A Man Had Tall Sons | 1958 |
| Ostenso, Martha | And the Town Talked | 1938 |
| Ostenso, Martha | Escape in Spring | 1939 |
| Ostenso, Martha | Gardenias in her hair | 1937 |
| Ostenso, Martha | Little Blue Hat | 1939 |
| Ostenso, Martha | Love Passed This Way | 1942 |
| Ostenso, Martha | Milk Route | 1948 |
| Ostenso, Martha | O River, Remember! | 1943 |
| Ostenso, Martha | Prologue to Love | 1932 |
| Ostenso, Martha | The Bridge | 1934 |
| Ostenso, Martha | The Dark Dawn | 1926 |
| Ostenso, Martha | The Doctor's Story | 1945 |
| Ostenso, Martha | The Dreamer | 1938 |
| Ostenso, Martha | The Last Mad Sky | 1935 |
| Ostenso, Martha | The Mad Carews | 1927 |
| Ostenso, Martha | The Mandrake Root | 1938 |
| Ostenso, Martha | The Stone Field | 1937 |
| Ostenso, Martha | The Storm | 1924 |
| Ostenso, Martha | The Sunset Tree | 1949 |
| Ostenso, Martha | The Waters Under the Earth | 1930 |
| Ostenso, Martha | The White Reef | 1934 |
| Ostenso, Martha | The Young May Moon | 1929 |
| Ostenso, Martha | There's Always Another Year | 1933 |
| Ostenso, Martha | Tumbleweed | 1940 |
| Ostenso, Martha | White Tryst | 1928 |
| Ostenso, Martha | Wife In Law | 1939 |
| Ostenso, Martha | Wild Geese | 1925 |
| Otway, Thomas | The Orphan, or, The Unhappy Marriage | 1680 |
| Otway, Thomas | Venice Preserv'd | 1682 |
| Oursler, Charles Fulton | Murder of a Startled Lady [About the Murder of a Startled Lady] | 1936 |
| Owen, Will | Old London Town | 1922 |
| Oxley, James Macdonald | Archie of Athabasca | 1893 |
| Oxley, James Macdonald | Donalblane of Darien | 1902 |