
1958 Horwitz paperback original

1959 US release as a Signet paperback original
cover art attributed to Barye Phillips
better image than previously posted

1961 Horwitz International Edition

cover art by Ron Lesser
1966 Signet reissue



1958 Horwitz paperback original

1959 US release as a Signet paperback original
cover art attributed to Barye Phillips
better image than previously posted

1961 Horwitz International Edition

cover art by Ron Lesser
1966 Signet reissue

