| Covers listed |
|
| 1935: | December, |
| 1939: | February, March, April, May, |
| 1946: | Vol 1 No 1April, May, June, July, August, September, October, November, December, |
| 1947: | January, March, April, May, June, Vol 3 # 4July, Vol 3 No 5 August, September, October, November, Vol 4 No 3 December, |
| 1948: | Vol 4 No 4 January, February, Vol 4 No 6 March, April, May, Vol 5 No 3 June, Vol 5 No 4July, Vol 5 No 5 August, |
| 1949: | February, March, April, May, June, August, November, |
| 1950: | January, February, March, May, August, October, Vol 10 No 2 November, December, |
| 1951: | March, May/June, July, August, October, November, |
| 1952: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1953: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1954: | February, March, May, June, July, August, September, October, November, December, |
| 1955: | January, February, March, April, May, June, July, August, September, October, December, |
| 1956: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1957: | January, February, March, April, May, June, July, Vol 23 No 4 August, Vol 23 No 5 September, October, November, December, |
| 1958: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1959: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1960: | January, February, March, April, May, June, July, August, October, December, Annual, |
| 1961: | January, February, May, July, September, October, November, December, |
| 1962: | January, February, April, May, June, July, October, December, |
| 1963: | January, |
