| Covers listed | |
| 1928: | #1 /June, #2 /July, #3 /August, #4 /September, #5 /October, #6 /November, #7 /December, |
| 1929: | #8 /January, #9 /February, #10 /March, #11 /April/May, #12 /June/July, #13 /August, #14 /September, #15 /October, #16 /December, |
| 1930: | #17 , #18 , |
| 1931: | #1 , #2 , #3 , #4 , #5 , #6 /2 April, |
