There's some fabulous space ephemera around from the 1950's. Here's an example, the Amoco Venture into Space Fold Out Map from 1957, recently pointed out to me by Wote and Paul V. Graced with many wonderful early rocket concepts, I particularly like the Booster Rocket shown above in close up [is it an Ehricke design?]. The Amoco map does turn up on Ebay from time to time. If you want to know more about this particular map and "Petrol" maps in general here's a beautiful site by Ian Byrne I found on the subject, Petrol Maps.
[picture: Petrol Maps]