I found this nice little book from 1968 with the title "manned spacecrafts".
It's really interesting to read. First of all because it is about the rocket race between USA and Sovjet and the early years of the cold war and it's about H-bombs and spy reconnaissance planes and the first satellites.
Secondly because it gives a sense of the level of the technology at this time and how the voyages into space must have expanded every little boys fantasy with strange planets and advanced zivilizations.
Besides this it has fantastic graphics in it.