Wonder Books

The Wonder Books are a series of books produced in the 1930s and 1940s.

It was published by the University of Knowledge Incorporated, editor in chief being Glenn Frank.

[1][2] It is not to be confused with the children's book imprint of Grosset and Dunlap.

Some of the Wonder Books they Published
The title page of the "Dawn of Civilization" book in the Wonder Book series published by The University of Knowledge.
This is a page of the "Dawn of Civilization" book from the Wonder Books series that contains publishing info.