| Covers listed | |
| 1970: | #1 /January/February, #2 /Spring, #3 /May-August, #4 /September/October, #5 /Winter, |
| 1971: | #6 /Spring, #7 , #8 , |
| 1972: | #9 /Spring, #10 /Summer, #11 /Autumn, #12 , |
| 1973: | #13 , #14 /Spring, #15 /Summer, #16 , |
| 1974: | #17 /Spring, #18 /Summer, #19 /Autumn, |
| 1975: | #20 /Spring, #21 , #22 /Autumn, #23 /Winter, |
| 1976: | #24 /Spring, #25 /Autumn, |
| 1977: | #26 /Spring, #27 , #28 , |
| 1978: | #29 , #30 , #31 /November, |
| 1979: | #32 /April, #33 /August, #34 /December, |
| 1980: | #35 /April, #36 /October, |
| 1981: | #37 /March, |
