Writer Michael Patrick Hearn. He’s edited “The Annotated Wizard of Oz: A Centennial Edition” (W.W. Norton). The book commemorates the 100th anniversary of the publication of L. Frank Baum’s classic “The Wonderful Wizard of Oz.” Back in 1900, the first 10,000 copies printed of Baum’s book sold out in two weeks. Baum wrote 14 Oz books in all.