I think I remember these from elementary school! In the library were two books chock full of far-out spacecraft tooling around fantastical otherworlds. There was accompanying text which attempted to give a non-ficticiousness to the book, but even at my impressionable, starry-eyed age that stuff was pretty lame. They text did not, however, detract from the grooviness of the groovy ships nor prevent me from unsuccessfully attempting to redrawn them on lined, three-hole punched paper.