| Covers listed | |
| 1927: | June, July, August, September, October, November, December, |
| 1928: | January, February, March, Vol 4 # 37April, May, June, July, August, September, October, November, December, |
| 1929: | January, February, March, April, May, June, July, August, September, October, November, December, |
| 1930: | January, February, March, |
