| Covers listed | |
| 1954: | 13 February, |
| 1962: | 16 June, |
| 1963: | 20 November, |
| 1964: | 15 February, 21 March, 18 April, 6 June, |
| 1965: | 16 January, 8 May, 17 July, 9 October, |
| 1966: | 9 April, 3 December, |
| 1968: | 24 February, |
| 1977: | September, October, |
| 1978: | August, September, |
| 1979: | August, September, |
| 1980: | February, |
| 1981: | September, |
| 1985: | August, November, |
| 1990: | July/August, |
| 1993: | July/August, |
| 2008: | October, |
| 2013: | , |
