
1958 Avon paperback reissue
cover art by Art Sussman
better image than previously posted

1952 Pocket Books reissue
cover art by James Meese

pen name of John Jakes
1958 Ace Double paperback original
cover art by Harry Barton

pseudonym of John Creasey
1957 Simon and Schuster hardcover in the US
1958 Barker hardcover in UK
1958 Signet paperback reissue in the US
cover art by Jerry Allison
better image than previously posted