| Covers listed |
|
| 1950: | #1 /May/June, #2 / July/August, #3 / September/October, |
| 1951: | January/February, June, |
| 1952: | January, March, May, July, September, November, |
| 1953: | January, March, May, July, September, November, |
| 1954: | January, March, May, July, |
| 1955: | January, March, May, July, November, |
| 1956: | January, March, May, July, September, November, |
| 1957: | March, May, July, September, November, |
| 1958: | January, March, May, July, September, November, |
| 1959: | January, May, July, |
| 1960: | May, September, November, November, |
| 1961: | January, March, |
| 1962: | February, June, September, |
| 1963: | June, December, |
| 1964: | March, September, December, |
| 1965: | June, September, September, |
| 1966: | September, |
| 1967: | January, September, |
| 1968: | June, December, |
| 1969: | March, |
| 1970: | June, |
| 1971: | July, |
| 1972: | March, |
| 1973: | March, September, |
