The Bombshell x 5 + 2

1960 paperback original by Horowitz in Australia and Signet in the US

cover art by Barye Phillips

given date is 1959 Dutch edition

1967 Signet reissue – cover art by Robert McGinnis

McGinnis sketch for Signet reissue cover

cover art by McGinnis for 1972 Signet reissue