| 100% | WHERES | 6 | "___ Waldo?" (children's book series) |
| 100% | ISPY | 4 | Children's book series akin to "Where's Waldo?" |
| 79% | ISPY | 4 | Children's book series with hidden objects: 2 wds. |
| 79% | ISPY | 4 | Children's book series for finding objects in photos |
| 77% | ISPY | 4 | Popular children's book series with hidden objects |
| 75% | ROBINSON | 8 | Swiss Family in children's book series |
| 74% | NODDY | 5 | Popular children's book series by English author Enid Blyton |
| 74% | WHERES | 6 | "___ Waldo?" (classic children's series) |
| 74% | MRMEN | 5 | Children's book series with characters that have surnames like Happy, Lazy and Noisy |
| 73% | PERCY | 5 | Demigod hero Jackson in children's book series |
| 73% | REACHER | 7 | Jack character in Lee Child's book series |
| 71% | WHERESWALDO | 11 | Popular children's book series ... whose protagonist is "hiding" in the circled letters |
| 71% | TOAD | 4 | Partner of Frog in a children's book series |
| 70% | ARNIE | 5 | "___ the Doughnut," children's book series |
| 70% | NATE | 4 | "___ the Great" (children's book series) |
| 70% | PETE | 4 | "___ the Cat" (children's book series) |
| 70% | TREE | 4 | "Magic ___ House" (children's book series) |
| 70% | MADELINE | 8 | Title girl in a children's book series set in Paris |
| 69% | PIGGIE | 6 | "Elephant and __" (Mo Willems children's book series) |
| 68% | ISPY | 4 | Best-selling children's book series by Walter Wick and Jean Marzollo |
| 68% | BABAR | 5 | King of the elephants in a children's book series |
| 68% | PERCY | 5 | "___ Jackson and the Olympians" (children's book series) |
| 67% | TIMMY | 5 | Dog in The Famous Five children's book series by Enid Blyton |
| 67% | SPOT | 4 | Dog in the "Dick and Jane" children's book series |
| 67% | TOAD | 4 | Frog and ___ (friends in a children's book series) |
| 66% | WALDO | 5 | "Where's ___?" (children's book series) |
| 65% | ISPY | 4 | Popular children's "find it" book series |
| 64% | ICE | 3 | "Diary of an ___ Princess" (children's book series by Christina Soontornvat) |
| 64% | THEBORROWERS | 12 | & 15A 1959 children’s book by Mary Norton; third in a series featuring the Clock family |