1957 Horwitz paperback original
1958 Signet edition – cover art by Barye Phillips
better image than previously posted
rewritten/reissued version of No Law Against Angels
1961 Horwitz International edition
1969 Horwitz International edition
cover art by Robert McGinnis
1956 Gold Medal paperback original
all cover art by Barye Phillips
better image than previously posted
10th with private eye Shell Scott
1953 Gold Medal paperback original
cover art by Barye Phillips
his seventh novel under his name. his supervisors at the CIA thought it was great cover for an agent to be a writer
1956 Crest edition – cover art by James Meese
better image than previously posted
1958 Crest – cover art by Darcy (Ernest Chiriacka)
1961 Gold Medal reissue – cover art by Barye Phillips
better image than previously posted
undated Fawcett Gold Medal reissue – cover art by Robert McGinnis
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
