March 11, 1939 issue – cover art by Emmett Watson
July 1952 Signet reissue, 3rd printing
cover art by Maurice Thomas – better image than previously posted
cover art by Robert Schulz
better image than previously posted
Sabotage x 5
Tag: signet paperback
1952 Signet reissue – cover art by Stanley Meltzoff
The Silver Tombstone x 3
1945 Rinehart hardcover
1948 Signet reissue – cover art by Robert Jonas
1959 Signet reissue with slight title change
cover art by Jerry Allison
1957 Signet edition – cover art by James Avati
The Devil’s Passkey x 2
The Nightshade Ring x 2
The Body Beautiful x 6
Devil on Two Sticks x 6
better image than previously posted
cover art by Victor Kalin
two reissue editions from Stark House Press
The Hammer of Thor x 4 + 1
1967 Horwitz release in Australia
1965 Signet paperback original in the US
cover art by Robert McGinnis
1966 German edition – photo of Jean Shrimpton on cover
The Wanton x 5
1959 Horowitz release in Australia
cover art by Barye Phillips – better image than previously posted
1959 Signet paperback original in the US
International Edition Series #10 December 1961, March 1965
cover design by Grant Roberts
1966 Signet reissue – cover art by Robert McGinnis
1968 New English Library/Four Square Books release in the UK
SMB Noir 
