| Covers listed |
|
| 1934: | January, March, May, June, July, August, September, October, November, December, |
| 1935: | January, February, March, April, July, August, September, October, December, |
| 1936: | January, April, July, November, December, |
| 1937: | February, March, April, May, June, July, August, September, November, |
| 1938: | January, February, April, November, |
| 1939: | April, May, June, August, September, November, December, |
| 1940: | January, February, May, June, July, August, September, October, November, December, |
| 1941: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1942: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1943: | March, May, November, |
| 1944: | June, |
| 1945: | April, July, August, September, October, November, December, |
| 1946: | June, July, September, |
| 1947: | January, March, May, |
| 1948: | February, July, August, September, October, November, December, |
| 1949: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1950: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1951: | January, February, March, April, May, June, |
