Cover art by Mike James
I suggest you follow this link; http://www.vernarockets.com/id43.html if you are interested in buying the book(s) and finding out everything you need to about the people involved in the publishing. (Well done and thank you)
I think this is the original image with the original model before photo shopping her head and space gun out. Go find out and report back to me. Or not.
It remains only for me to add, in my best Leslie Phillips voice; "Ding Dong!" and "Rather!"