A big thank you to VonMurr for sending the first ten covers in this post. They come from his personal collection.
The rest were found on my searches through online Polish bookstores.
All covers above this point are from the collection of VonMurr. Click for larger views.
Apologies for the scrappiness of the images below this point. Clicking will not reveal much larger views. (I didn’t disable the click-through in case someone wants to “favorite” an image on flickr.)
–Slovak (and some Czech) book covers 1 & 2, 3
–Japanese book covers 1 & 2
–Indian book covers 1 & 2
—Blickfang! The Eye-catching covers of Weimar Berlin
—Atomic Anadolu Pop: 25 Book Covers from Turkey