L. Frank Baum, American novelist (died 1919)

Lyman Frank Baum was an American author best known for his children's fantasy books, particularly The Wonderful Wizard of Oz, part of a series. In addition to the 14 Oz books, Baum penned 41 other novels, 83 short stories, over 200 poems, and at least 42 scripts. He made numerous attempts to bring his works to the stage and screen; the 1939 adaptation of the first Oz book became a landmark of 20th-century cinema.

May 15 is the 135th day of the year in the Gregorian calendar; 230 days remain until the end of the year.