| Name | Count | Years active |
|---|---|---|
| Hart-Davis | 53 | 1969-1975 |
| Hart-Davis Educational | 38 | 1961, 1967-1971, 1973 |
| Weidenfeld & Nicolson | 25 | 1963-1965, 1968-1969 |
| Putnam | 3 | 1971-1972 |
| Weidenfeld& Nicolson | 2 | 1968 |
| Rupert Hart-Davis | 2 | 1970 |
| R. Hart-Davis | 2 | 1971 |
| Hart-Davis Educ | 2 | 1962, 1967 |
| R. Hart-Davis Educational Publications | 1 | 1970 |
| Watson-Guptill | 1 | 1969 |