| Author | Popularity |
| Richards, I. A. (Ivor Armstrong) |
5 |
| Christopher I. Richards |
2 |
| Davies, R. G. (Richard Gareth), 1920- |
1 |
| Gayler, J. L. (Joshua Leonard) |
1 |
| Imms, A. D. (Augustus Daniel), 1880-1949 |
1 |
| Morris, Joseph Acton |
1 |
| Ogden, C. K. (Charles Kay), 1889-1957 |
1 |
| Richards, A. I. |
1 |
| Richards, Irene |
1 |
| Richards, O. W. (Owain Westmacott), 1901-1984 |
1 |