William
According to Tuck, there are 33 titles up to 1964, but only the two listed here are speculative fiction.
Titles (2)
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 29 | William and the Moon Rocket | Richmal Crompton | 1954 | |
| 30 | William and the Space Animal | Richmal Crompton | 1956 |