| Once Upon a Monbeast...
Charles E. Fritch | |
| Once Upon A Planet
J. J. Allerton | |
| Once Upon A Time
Richard Harding Davis | |
| Once upon a time animal stories
Carolyn Sherwin Bailey | |
| Once Upon a Time in Connecticut
Caroline Clifford Newton | |
| Once Upon a Time in Delaware
Katharine Pyle | |
| Once Upon a Time, and Other Child-Verses
Mary Eleanor Wilkins Freeman | |
| One Against the Moon
Donald A. Wollheim | |
| One Against the Stars
Bill Garson | |
| One Basket
Edna Ferber |
