| Covers listed | |
| 1921: | /October, |
| 1922: | #10 / , #11 / , #14 / , #16 / , |
| 1923: | #4 , #12 / , #17 / , |
| 1924: | #12 , |
| 1925: | #1 , #2 /10 February, #3 , #4 , #10 , #11 , #13 , #15-16 , #18 , |
| 1926: | #3 , #15 , |
| 1927: | #1 , #2 , #5 , #11 , #16-17 , |
| 1928: | #4 / February, #18 / October, |
| 1929: | #2 /31 January, #9 , #22 /1 December, #23-24 /15 November, |
| 1930: | #1 /1 January, #2 /15 January, #5 / , #14-15 , #18 / October, #20 / , #21 /15 November, |
| 1931: | #1 / , #7 /18 April, |
