This is more of an adult book than a children's book but it still has a number of fantastical illustrations worth sharing.
Chambers, Bradford. Illustrated by Chambers, Eve. The Complete Space Rocketeer. New York: Stavon Publishers. (62 p.) 21 cm.
Text includes topics such as rocket theory, space suits, space stations and trips to the Moon and Mars. Ends with the prophetic words "…let's conquer space now. We can do that." Full of drawings of rockets, space suits and a manned landing on the Moon. There was a 1956 edition re-titled "The Key to Interplanetary Space Travel".