| Covers listed | |
| 1968: | , , |
| 1969: | September, |
| 1972: | December, |
| 1976: | , |
| 1977: | January, April, August, December, |
| 1978: | #25 / December, |
| 1979: | January, March, August, October, |
| 1980: | SpecialFebruary, |
| 1981: | April, June, |
| 1982: | September, |
| 1983: | June, #16 / July, |
| 1984: | , |
