July 1942 issue ~ cover art by H.L. Parkhurst July 1942 cover art by H.L. Parkhurst better image than previously posted
March 1940 issue ~ cover art by H.J. Ward March 1940 cover art by H.J. Ward better image than previously posted
December 1941 issue ~ cover art by H.J. Ward December 1941 cover art by H.J. Ward better image than previously posted [image updated 1/9/24]
September 1938 series ~ cover art by H.L. Parkhurst September 1938 cover art by H.L. Parkhurst better image than previously posted [image updated 1/29/34]
October 1939 issue ~ cover art by H.J. Ward October 1939 better image than previously posted cover art by H.J. Ward
November 1940 issue ~ cover art by H.L. Parkhurst November 1940 cover art by H.L. Parkhurst [image updated 1/28/24]