John D. MacDonald

First published by Simon & Schuster (hardback) in 1960 and Crest (paperback) in 1961. This edition published by Gold Medal (d1633) is dated 1966. Cover art by Barye Phillips.

First published by Gold Medal in 1960. This (2nd?) printing (d1636) published in March 1966. Cover art by Robert McGinnis.

First published by Simon & Schuster (hardback) in 1959 and by Crest (paperback) in 1960. This first Gold Medal edition (R1649) is undated but is circa April 1966. Cover art is uncredited but the image is a cropped version of the Crest cover, which had two more voyeurs and what looks like a signature (possibly MH - Mitchell Hooks??)

Published by Fawcett Gold Medal (d1674) in May 1966. Seventh in the Travis McGee series. Cover art by Ron Lesser.

Originally published by Popular Library in 1956. This edition published by Gold Medal (d1761) is undated but is circa early 1967. Cover art by Robert McGinnis.

First published by Gold Medal in 1961. This 3rd printing (d1776) is undated but is circa 1967. Cover art is uncredited.

First published by Dell in 1957. First Gold Medal edition published in 1965, but this later edition (d1820) is dated July 1967. Cover art by Bill Johnson.

First published by Popular Library in 1956. This undated edtion from Gold Medal (R2097) is circa 1969. Cover art by Robert McGinnis.

First published by Fawcett Gold Medal in 1965. This 3rd printing (T2134) is dated September 1969. Cover art by Ron Lesser.