May 1933 Canadian edition
cover art by Julius Erbit from the US edition
better image than previously posted
May 1933 Canadian edition ~ cover art by Julius Erbit
Tag: e. hoffmann price
January 1934 issue ~ cover art by Clifford Benton
December 1942 issue ~ cover art by Allen Anderson
final issue before being re-titled Speed Mystery
cover art by Allen Anderson
better image than previously posted
SMB Noir 