| Hour of assassins & other poems | Bogle-L'Ouverture | Tiada | 1983 | 090452129X |
| The 4-hour work week | | Tiada | 2007 | 97800091923532 |
| The children's hour : nature and the universe | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : parents' guide | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : the story of art and music | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : heroes and heroines | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : things to make and do | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : favorite stories and songs | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : folk and fairy tales | The University Society, Inc. | Tiada | 1979 | 0717281256 |
| The children's hour : happy hours in storyland | The University Society, Inc. | Tiada | 1979 | 0717281256 |