| Covers listed | |
| 1952: | Vol 1 No 1 November, |
| 1959: | May, |
| 1960: | March, April, November, |
| 1961: | August, |
| 1962: | August, |
| 1965: | July, |
| 1966: | May, December, |
| 1967: | October, |
| 1968: | October, |
| 1969: | February, |
| 1971: | September, |
| 1972: | May, December, |
| 1973: | March, October, |
| 1974: | June, |
