I don't know much about DAW Books' "Cap Kennedy" series, written by British sci-fi scribe E.C. Tubb under the pseudonym of "Gregory Kern." Nor do I know the name of the artist (I'm now told that it's Jack Gaughan) that painted these covers. What I do know is that the series was published in the 1970s and ran for at least 17 volumes.
I've never read any of these, but being as the tagline "Secret Agent of the Spaceways" appears to combine at least two of my favorite genres, I suspect that I'll hunt down a copy or two one of these days.