http://binarybonsai.com/archives/2007/12/26/precursor-to-the-star-destroyer/
Did Joe Johnston sketch the Star Destroyer first, or did Cantwell do the first prototype from Lucas's notes alone? There's a great quote on page 67 of The Secret History of Star Wars where Lucas says he read all the sci-fi magazines he could get his hands on around 73-74, which is right when this was first published, so it seems plausible that he saw this and passed it on.
I don't mean to imply anything unsavory, I simply found the resemblance striking.