Ruth Plumly Thompson

An avid reader of Baum's books and a lifelong children's writer, Thompson was born in Philadelphia, Pennsylvania and began her writing career in 1914 when she took a job with the Philadelphia Public Ledger; she wrote a weekly children's column for the newspaper. She had already published her first children's book, The Perhappsy Chaps, and her second, The Princess of Cozytown, was pending publication when William Lee, vice president of Baum's publisher Reilly & Lee, solicited Thompson to continue the Oz series. (Rumors among fans that Thompson was Baum's niece were untrue.) Between 1921 and 1939, she wrote one Oz book a year. (Thompson was the primary supporter of her widowed mother and invalid sister, so that the annual income from the Oz books was important for her financial circumstances.)