L. Frank Baum was born in New York in 1856. The Wizard of Oz, published in 1900, was based on a story he used to tell his own children. It became an international bestseller and was subsequently adapted into a stage play (1902) and a film starring Judy Garland (1939). Baum wrote thirteen further Oz books, alongside numerous other novels, short stories, scripts and poems. After his death in 1919, his publishers carried on producing Oz stories and didn’t stop until 1963.