continental drift. noun. geology. the theory that the earth's continents move gradually over the surface of the planet on a substratum of magma. The present-day configuration of the continents is thought to be the result of the fragmentation of a single landmass, Pangaea, that existed 200 million years ago.
The Wonderful Wizard of Oz is an American children's novel written by author L. Frank Baum and illustrated by W. W. Denslow, originally published by the George M. Hill Company in Chicago on May 17, 1900.
Baum dedicated the book to my good friend & comrade, My Wife, Maud Gage Baum. In January 1901, George M. Hill Company completed printing the first edition, a total of 10,000 copies, which quickly sold out. The Wonderful Wizard of Oz sold three million copies by the time it entered the public domain in 1956. 1900 first edition cover, George M. Hill, Chicago, New York.