Late getting started on this - but I saw some of his work growing up in the '50s and '60s and never knew his name. Just spent an hour with his images on Google and really enjoyed them. He and others were responsible for me (and millions of other kids) to want to be astronauts ;-) Thought by now we'd be able to vacation on the moon or at least in earth orbit!
Looking forward to re-creating some of his vehicles i(so retro!).