Among the books at my cabin is a complete set of The Book of Knowledge, published in the mid-1950's. My daughter inherited these books when they bought their house, and she let me have them.
When you open up the cover of any volume, here's what you see. I loved this, when I was ten years old!
A picture of a "modern" assembly line.
I made a recent entry about locust thorns.
It seems that in the 1950's, smoke was a good sign. My, how times have changed.
Click on any of the pictures to make them larger.