| Covers listed | |
| 1925: | Vol 6 No 1515 June, |
| 1931: | #5 /15 March, #9 /15 May, 15 July, #20 /30 October, #23-4 / December, |
| 1932: | #14 / July, |
| 1933: | #21 / November, |
| 1934: | February, May, |
| 1935: | April, October, |
| 1937: | March, |
| 1938: | June, July/August, |
| 1939: | March, April, May, August, |
| 1940: | June, |
| 1941: | October, |
