The American author L. Frank Baum (1856-1919) wrote over fifty books and is best known for The Wonderful Wizard of Oz, which became a musical before being adapted into one of the best-loved films of all time.

Olimpia Zagnoli is an Italian artist who often collaborates with The New York Times, The New Yorker, Marie Claire, Rolling Stone, Taschen, and many others. She recently completed the cover design for the "American Illustration" book and she has done ad campaigns for Clinique, Panda, and other major clients both in the US and Europe. She lives in Milan in a house with kaleidoscopic floors.