ACL Reviews
- Oh No, the Aunts Are Here
- Oh, Sal
- Okchundang Candy
- Old MacPumpkin Had a Farm
- Olivetti
- On Again, Awkward Again
- On Air with Zoe Washington
- On the Come Up
- On the corner of Chocolate Avenue
- On the Move: Home Is Where You Find It
- On the Trapline
- Once Was a Time
- One and Only Bob, The
- One and Only Ruby, The
- One Big Open Sky
- One Chicken Nugget
- One Day at the Bottom of the Deep Blue Sea
- One Day: By the Numbers : A Book of Infographics
- One Girl's Voice: How Lucy Stone Helped Change the Law of the Land
- One Last Word: Wisdom of the Harlem Renaissance
- One Long Line: Marching Caterpillars and the Scientists Who Followed Them
- One Thing You'd Save, The
- One-Third Nerd
- Only in California: Weird and Wonderful Facts About the Golden State
- Only the Best
- Only This Beautiful Moment
- Onward: 16 Climate Fiction Short Stories to Inspire Hope
- Oops! Rabbit
- Open Wide!: Jaw-Dropping Mouths of the Animal World
- Operation Do-Over
- Operation Robot Rescue
- Opposites Attract
- Opting Out
- Orbiting Jupiter
- Orris and Timble: The Beginning
- Orson and the World's Loudest Library
- Other Side of Happy, The
- Other Side of Tomorrow, The
- Otter’s New Neighbors
- Our Camping Trip: Physics, Chemistry & Fun
- Our Food: A Healthy Serving of Science and Poems
- Our Incredible Library Book, and the Wonderful Journeys It Took
- Our Lake
- Our New Neighbors
- Our Roof is Blue
- Our Table
- Out of Range
- Out of This World: Star-Studded Haiku
- Outside
- Outside In and the Inside Out: A Story About Arnold Lobel