| Covers listed |
|
| 1973: | #1 Vol 1 # 1/October/November, #2 Vol 1 # 2/December/Jan, |
| 1974: | #3 Vol 1 # 3/February/March, #4 Vol 1 # 4/April/ May, #5 Vol 1 # 5/June/July, #6 Vol 1 # 6/August, #7 Vol 1 # 7/October, #8 Vol 1 # 8/December, |
| 1975: | Vol 2 # 1February, Vol 2 # 2April, Vol 2 # 3June, Vol 2 # 4August, Vol 2 # 5October, Vol 2 # 6December, |
| 1976: | February, April, June, |
| 1977: | February, Spring, Summer, Fall, |
| 1978: | February, April, May, June, July, August, September, October, November, December, |
| 1979: | February, April, June, August, October, December, |
| 1980: | February, April, June, August, October, December, |
| 1981: | February, April, June, August, October, December, |
| 1982: | February, April, June, August, October, December, |
| 1983: | February, April, June, August, October, December, |
| 1984: | February, April, June, August, October, December, |
| 1985: | February, April, June, August, |
| 1986: | February, April, June, August, October, December, |
| 1987: | Vol 14 No 1 February, April, |
