I found these over on thesimonsound blog, and he got them from some other blog, etc, but aren’t they nice? A whole series of 163 covers for German sci-fi books designed in the 60s / 70s by Eyke Volkmer. See them all here. You might know that I am a fan of things that are designed in series
While you’re at it [looking at 70’s sci-fi stuff] listen to these fascinating radio shows called ‘The Tone Generation’ about electronic music which are on the simonsound site. They are by Ian Helliwell and were first broadcast by Resonance FM in London