Born: 1891 July 27 in Philadelphia, Pennsylvania, United States
Died: 1976 April 6 in Malvern, Pennsylvania, United States
Biography: Ruth Plumly Thompson was best known as a children's author, specifically as the writer who continued the Oz series of books after their creator, L. Frank Baum, died.
Thompson worked in comic books for David McKay under her name and the pen name of Jo King. She worked in support as an editor from about 1937 to about 1947 for the King Comics title under Jo King. As Thompson, she wrote text stories of Sis Sez, Her Highness of Whyness and King Kojo, The Wizard of Way-Up, the Pet Post feature, and a number of fiction text stories from about 1936 to about 1943.
Notes: Not to be confused with the Ruth Thompson who did art work for George W. Dougherty Publishing Company series Future World Comics, in 1946. Also not to be confused with the Ruth Thompson who worked as an inker for Palliard Press in the 1990s.
Additional Who's Who entry for the Jo King pen name can be seen here: