Artist Bob Larkin has been responsible for many. many memorable covers of the magazines that I collected when young; Planet of the Apes, Marvel's monster magazines, Crazy, DC comics covers, Trek novel covers, and many many more. I have just created a Facebook group devoted to collecting his art in one place, so if you, like me, love his art and have good memories of it, come join us! It's at: https://www.facebook.com/groups/boblarkinappreciationgroup
A true Trek fan himself, here we see Bob in a photo from his blog commemorating the 50th anniversary of the show! Visit his blog here: http://boblarkin.blogspot.com/