| Name | Count | Years active |
|---|---|---|
| Jackdaw Publications | 41 | 1966, 1968-1972 |
| Grossman Publishers | 26 | 1972-1975, 1991 |
| Jackdaw | 15 | 1965-1966, 1968, 1971-1972, 1974-1975 |
| Cape | 14 | 1968-1969 |
| Clarke, Irwin | 13 | 1968-1971 |
| Grossman | 8 | 1968, 1971-1972 |
| Clarke Irwin | 5 | 1968-1969 |
| Jackdaw Pubns | 3 | 1966-1968 |
| Viking Press | 3 | 1972, 1977 |
| Jackdaw (for) Thames Television (etc.) | 2 | 1976, 1978 |