| SERIES/BOOK TITLE | AUTHOR |
| OAK STREET BOYS' CLUB |
Warren L. Eldred |
| OAKDALE |
Morgan Scott |
| OAKDALE AFFAIR, THE |
Edgar Rice Burroughs |
| OAKHURST SAGA |
Walter Reed Johnson |
| OCEAN WIRELESS BOYS |
Captain Wilbur Lawton |
| OCEANOGRAPHY, THE HOW AND WHY BOOK OF |
Robert Scharff |
| OFF TO THE RACES |
F. & M. Phleger |
| OFF WE GO |
Arthur I. Gates, Miriam Blanton Huber & Celeste Comegys Peardon |
| OFFICE WIFE |
Faith Baldwin |
| OG THE CAVE BOY |
Irving Crump |
| OH, LITTLE RABBIT |
Joan M. Lexau |
| O.J. SIMPSON |
Ray Hill |
| OL' PAUL THE MIGHTY LOGGER |
Glen Rounds |
| OLD BONES, THE WONDER HORSE |
Mildred Mastin Pace |
| OLD ELECTRICITY |
Old Sleuth |
| OLD FRIENDS, NEW FRIENDS |
Joanne Ryder |
| OLD GLORY |
Edward Stratemeyer |
| OLD KING COLE, STORY OF |
Daphne Hogstrom |
OLD MACDONALD HAD A FARM (Little Golden Book) |
Anonymous Adaptation |
OLD MACDONALD HAD A FARM (Tell-A-Tale Book) |
Anonymous |
OLD MOTHER GOOSE AND OTHER NURSERY RHYMES |
Anonymous Adaptation |
OLD MOTHER HUBBARD (Famous Elf Book) |
Anonymous |
OLD MOTHER HUBBARD (Little Golden Book) |
Anonymous Adaptation |
| OLD MOTHER MIDDLE MUDDLE |
Bill Martin Jr. |
OLD WOMAN AND HER PIG, THE (Tell-A-Tale Book) |
Anonymous Adaptation |
OLD WOMAN AND HER PIG, THE (Famous Elf Book) |
Wallace Wadsworth |
| OLD YELLER |
Fred Gipson |
OLD YELLER (Little Golden Book) |
Irwin Shapiro |
| OLDEST ONE |
Dorothy Holder Jones |
| OLIVER |
Syd Hoff |
| OLIVER OPTIC BOOKS |
Oliver Optic |
| OLIVER OPTIC SERIES |
Oliver Optic |
| OLIVER TWIST |
Charles Dickens |
OLIVER TWIST (Moby Books Edition) |
Marian Leighton (Adapted By) |
| ON CHERRY STREET |
Odille Ousley & David H. Russell |
| ON LAND AND WATER |
Horace Mann Buckley, Margaret L. White, Alice B. Adams & Leslie R. Silvernale |
| ON MY WAY WITH SESAME STREET |
Various Authors |
| ON OUR WAY |
Emmett A. Betts & Carolyn M. Welch |
| ON THE DOUBLE |
Roger Fuller |
| ON THE FARM |
Irene Little |
| ON THE TRAIL OF ADVENTURE |
Gerald Yoakam, Kathleen Hester & Louise Abney |
| ON WE GO |
Paul McKee, M. Lucille Harrison, Annie McCowen & Elizabeth Lehr |
| ONCE I HAD A MONSTER |
Ann Hellie |
| ONCE THERE WAS A HOUSE |
Milton Wynne |
| ONCE UPON A TIME |
Anonymous |
| 1 BOY LIVES IN MY HOUSE |
Florence White |
| ONE BOY TOO MANY |
Lebbeus Mitchell |
| ONE DAY IN THE LIFE OF IVAN DENISOVICH |
Alexander Solzhenitsyn |
| ONE FISH, TWO FISH, RED FISH, BLUE FISH |
Dr. Seuss |
| ONE FOR THE MONEY |
Janet Lambert |
| ONE KITTEN IS NOT TOO MANY |
Dorothy Levenson |
| ONE HUNDRED AND ONE DALMATIANS |
James Fletcher |
ONE HUNDRED AND ONE DALMATIANS: PUPPY ROUNDUP! |
Margo Lundell |
| ONE HUNDRED DOLLAR MISUNDERSTANDING |
Robert Gover |
| ONE HUNDRED ANIMAL STORIES |
Virginia Cunningham |
| 100 YEARS OF OZ |
John Fricke |
| ONE OF THE FAMILY |
Peggy Archer |
| ONE-STRING FIDDLE |
Erick Berry |
| ONE TWO BUCKLE MY SHOE |
Edna M. Kaula |
| ONE, TWO, COCK-A-DOODLE-DOO |
Josephine Van Dolzen Pease |
| ONE TWO THREE |
Charlie |
| OOTAH AND HIS PUPPY |
Marie Ahnighito Peary |
| OPEN THE DOOR |
Mabel O'Donnell |
| OPEN THE GATE |
Odille Ousley |
| ORIOLE PUTNAM |
Amy Bell Marlowe |
| OTHER SIDE OF THE NIGHT |
Edmund Schiddel |
| OUR ANIMAL FRIENDS |
Virginia Hunter |
| OUR AUTO TRIP |
Marian Edsall |
| OUR LADY'S MEDAL |
Leah Kean |
| OUR NEW FRIENDS |
William S. Gray, Marion Monroe, A. Sterl Artley & May Hill Arbuthnot |
| OUR PUPPY |
Elsa Ruth Nast |
| OUR SCHOOL |
William D. Sheldon, Queenie B. Mills & Margaret K. Moore |
| OUR WORLD OF COLOR AND SOUND |
Reneé Bartowski |
| OUR YOUNG AEROPLANE SCOUTS |
Horace Porter |
| OUTBOARD BOYS |
Roger Garis |
| OUTDOOR SERIES |
Various Authors |
| OUTDOOR CHUMS |
Captain Quincy Allen |
| OUTDOOR GIRLS |
Laura Lee Hope |
| OUTLAW OF TORN |
Edgar Rice Burroughs |
| OUTLAW RANCH |
Frank E. Robertson |
| OUTSIDE WITH BABY |
Evelyn Swetnam |
OWL AND THE PUSSY-CAT (Top Top Tale) |
Edward Lear |
| OWLY |
Mike Thaler |
| O.J. SIMPSON |
Ray Hill |