| Covers listed | |
| 1946: | June, October, December, |
| 1950: | December, |
| 1952: | May, |
| 1956: | February, September, |
| 1958: | May, |
| 1960: | November, |
| 1966: | July, |
| 1967: | February, |
| 1968: | February, April, |
| 1969: | August, November, |
| 1970: | August, |
| 1971: | January, February, March, May, |
| 1973: | April, August, October, November, |
| 1974: | March, May, October, December, |
| 1975: | February, May, June, July, October, |
| 1976: | February, April, October, |
