You searched for books with "O" in the title. Here’s what I dug up.

Title Subtitle Call number Author Illustrator Series Book type Subjects
On Morning Wings 223.209 Lin Reeve Lindbergh Holly Meade Nonfiction Hope; Love; Nature; Psalms; Comfort View
On the Mountain E Ple Pledger, Maurice. Pledger, Maurice, illus E Animals, mountain; Texture; Touch View
On My Way EC deP dePaola, Tomie dePaola, Tomie 29 Fairmont Avenue Easy Families; School; Reading View
On the Night You Were Born E Til Tillman, Nancy. Tillman, Nancy, illus E Birth; Individuality; Love View
On Noah's Ark E Bre Brett, Jan. Brett, Jan, illus E Noah's ark; Animals View
On A Scary Scary Night Can You See What I See? 793.73 Wic Wick, Walter Can You See What I See? Nonfiction Ghosts; Puzzles; Searching;; Haunted places View
Onstage & Backstage at the Night Owl Theater 792.023 Hay Ann Hayes Karmen Thompson Fiction Actors; Plays; Theater; Theater production; Theater sets View
On This Special Night E Fre Freedman, Claire. Mendez, Simon, illus E Christmas; Nativity View
On This Spot An Expedition Back Through Time 974.7 Goo Goodman, Susan E. Christiansen, Lee Nonfiction New york city; Geology;; History, new york city View
On the Wings of Heroes Pec Peck, Richard Fiction Families; United states; Fathers; World war ii; Brothers; World war ii, home front; Illinois View
Oops! E McN McNaughton, Colin. McNaughton, Colin, illus E Wolves; Pigs; Folktales View
Operation Bunny: Wings & Co. Gar Gardner, Sally Roberts, David Fiction Mysteries; Fairies; Cats; Orphans; Magic View
Operation YES Hol Holmes, Sara Lewis Fiction School; Teachers; Soldiers; Acting; Injuries View
O Pioneers! Cat Cather, Willa. Fic Pioneers; Nebraska; Farming; Families View
Optical Tricks 152.1 Wic Wick, Walter Nonfiction Photography; Optical illusions View
Orangutans & Gazelles 591 Dal Dalton, Sheila Getting to Know . . . Nature's Children Nonfiction Animals; Nature; Animals, baby;; Orangutans; Gazelles View
Orani : My Father's Village / 945.093 Niv Nivola, Claire A. Nivola, Claire, illus * Orani (italian village); Villages; Italy; Sardinia View
Other Bells for Us to Ring Cor Cormier, Robert Ray, Deborah Kogan Fiction Catholicism; World war ii; Friendship; Christmas; Protestantism; Miracles; World war ii, home front View
Orchard of the Crescent Moon Nim Nimmo, Jenny Fiction Families; Magicians; Magic; Wales View
Ordinary Mary's Extraordinary Deed E Pea Pearson, Emily. Kosaka, Fumi, illus E Kindness View
Or Give Me Death A Novel of Patrick Henry's Family Rin Rinaldi, Ann Fiction Families; United states; Mental illness; United states--history--revolutionary war; Virginia; Henry, patrick View
Origami Holidays 736 Ngu Nguyen, Duy Nguyen, Duy Nonfiction Art; Origami; Paper folding View
Origami Paper Animals 736.982 Bou Boursin, Didier Boursin, Didier Nonfiction Animals; Art; Origami; Paper folding View
Orpheus and Eurydice 398.2093802 Lupton, Hugh, and Daniel Morden Henaff, Carole Fiction Death; Music; Afterlife; Myths View
Orwell's Lunch Jen Jennings, Richard Fiction Rabbits; Horoscopes View
Otherwise Known as Sheila the Great Blu Blume, Judy. Fic Identity; Fears; Vacations; Dogs; Swimming View
Oscar Otter ER Ben Benchley, Nathaniel Lobel, Arnold Easy Building; Otters; Youths View
Oskar Schindler Righteous Gentile 92 Sch Roberts, Jeremy Nonfiction Heroes; World war ii; Nazis; Antisemitism; Schindler, oskar; View
Oswald E Yac Yaccarino, Dan. Yaccarino, Dan, illus E Moving; Pianos; Helpfulness View
Otis E Lon Long, Loren Long, Loren Easy Friendship; Rescues View
Otis Spofford Cle Cleary, Beverly. Darling, Louis, illus Fic School; Mischief; Teasing View
Otto the Book Bear E Cle Kate Cleminson Kate Cleminson Easy Bears; Loneliness; Libraries; Books View
Otto Carrotto ECar Carrer, Chiarra Carrer, Chiara Easy Rabbits; Food; Carrots View
Ouch! How Your Body Makes It Through a Bad Day 612 Wal Walker, Richard NIKID Design, Ltd Nonfiction Injuries; Human body; Immune system; Pain View
Our Century in Pictures For Young People 909.82 Sto Stolley, Richard B. Nonfiction Photography; History, world; History, twentieth century;; History, modern View
Our Country's Presidents 973.09 Bau Ann Bausum Nonfiction Presidents; American; United states--history--miscellanea; Constitution (u.s.) View
Our Favorite Stories From Around the World 398.2 Gav Gavin, Jamila Hall, Amanda Nonfiction Folktales; Folk tales, african; Folktales, multi-cultural View
Our Lady of Guadalupe The Graphic Novel G Mug Muglia, Natalie & Sam Estrada Spadaford, Joe; Rachel Napierkowski; Amy Rodriguez; Hannah Muglia Graphic Novel Faith; Courage; War; Miracles; History; Catholicism; Guadalupe, our lady of View
Our New Dog 636.7 Roc Rocca, Nuria and Curto, Rosa M. Nonfiction Dogs; Pets; Puppies; Dogs, caring for View
Our Solar System 523.2 Sim Simon, Seymour Nonfiction Earth; Planets; Solar system; Moon View
Our Star: The Sun 523.7 Est Estalella, Robert Nonfiction Stars; Astronomy; Sun; Solar flares; View
Our Strange New Land : Elizabeth's Diary, Jamestown, Virginia, 1609 / Her Hermes, Patricia. My America Fic United states; Jamestown View
Our World of Mysteries Fascinating Facts About the Planet Earth 508 Lor Suzanne Lord Nonfiction Rain forests; Earth; Marine animals; Mountains; Oceans; Nature; Animals, rain forest View
Outbreak Disease Detectives at Work 614.4 Fri Friedlander, Jr., Mark P. Nonfiction Disease; Epidemics; Plague, the; Epidemiology; Malaria; Influenza; Diphtheria; Ebola virus; Aids; Pandemics View
Outcast Sut Sutcliff, Rosemary Kennedy, Richard Fiction Orphans; Slavery; Roman empire; History, roman; Great britain View
An Outlaw Thanksgiving E McC McCully, Emily Arnold McCully, Emily Arnold Easy Thanksgiving; Outlaws; Trains, passenger; Cassidy, butch View
Out of Darkness The Story of Louis Braille 92 Bra Freedman, Russell Kiesler, Kate Nonfiction Blindness; Communication; Braille, louis; Braille View
Out of the Dust Hes Hesse, Karen Fiction Music; Accidents; Injuries; Oklahoma; Dust storms; Pianists; Dust bowl, the View
Out of Nowhere Seb Sebestyen, Ouida Fiction Dogs; Love; Friendship; Foster children; Families, dysfunctional; Foster parents View
Out of Wonder Poems Celebrating Poets 811.54 Ale Alexander, Kwame, ed. Holmes, Ekua Nonfiction Poetry; Poets View