| Our Young Folks, Vol 1, No. 1 / An Illustrated Magazine
Various | |
| Our Young Folks—Vol. I, No. II, February 1865 / An Illustrated Magazine for Boys and Girls
Various | |
| Ourika
duchesse de Claire de Durfort Duras | |
| Ouroboros; or, the mechanical extension of mankind
Garet Garrett | |
| Out and About London
Thomas Burke | |
| Out Around Rigel
Robert H. Wilson | |
| Out for Business; or, Robert Frost's Strange Career
Jr. Horatio Alger; Edward Stratemeyer | |
| Out from the heart
James Allen | |
| Out in the Forty-Five / Duncan Keith's Vow
Emily Sarah Holt | |
| Out Like a Light
Randall Garrett; Laurence M. Janifer |
