| Covers listed | |
| 1971: | #78 / , |
| 1973: | #100 / , #105 / , #106 / , |
| 1975: | #115 / , #118 / , |
| 1977: | #133 / January, #136 / June, #139 /October, #140 / , |
| 1978: | #141 / , #142 /April, #145 / , #146 / , |
| 1979: | #147 /February, #148 /April, #149 / , |
| 1980: | #151 / August, |
| 1983: | #153 / , |
