On the face of it, its pretty simple boy scout type crafting, balsa wood, craft knife and a lot of sanding, but some of the results are quite respectable
Its interesting to see some of the early representations of the newly proposed Saturn Rocket are still way off the mark and even the massive Nova launch vehicle gets a mention.
The bulk of the models are purely hypothetical, with nods towards Ehricke, Braun and Ley, and some are entirely fictional with play in mind.
I recall buying a pack of balsa wood from the local hobby shop and rather than following these particular plans, whittling out my own designs for various gliders and spaceships, which were (mostly) successfully launched out of the bedroom window!
This particular copy appeared on ebay recently and i was really pleased to be able to read it again and enjoy the memories of those heady summer holidays.