"Oz Before the Rainbow: L. Frank Baum's "The Wonderful Wizard of Oz" on Stage and Screen to 1939" (2000)* Velde, Francois R. "Following the Yellow Brick Road: How the United States Adopted the Gold Standard" Economic Perspectives.
"Oz Before the Rainbow: L. Frank Baum’s «The Wonderful Wizard of Oz» on Stage and Screen to 1939" (2000)* Velde, Francois R. «Following the Yellow Brick Road: How the United States Adopted the Gold Standard» Economic Perspectives.