| Covers listed | |
| 1948: | #7 , |
| 1949: | #4 / , #5 / , |
| 1951: | December, |
| 1953: | #14-15 /4 April, |
| 1960: | #7 / , |
| 1963: | October, |
| 1965: | #5/6 , |
| 1969: | #11-12 / , |
| 1971: | March/April, |
| 1981: | September/October, #5/6 , |
| 1982: | #1/2 , |
| 1986: | September/October, November/December, |
| 1988: | July/August, |
| 1989: | March/April, November/December, |
| 1990: | January/February, May/June, July/August, |
| 1993: | September/October, |
