John Frederick "Jack" Snow (15 August 1907 – 13 July 1956) was a writer, radio writer and scholar of the works of L. Frank Baum. Snow succeeded John R. Neill as Royal Historian of Oz, and he wrote two of The Famous Forty Oz Books: The Magical Mimics in Oz (1946) and The Shaggy Man of Oz (1949). He later wrote Who's Who in Oz (1954), a thorough guide to the . His other Oz work is a short story, "A Murder in Oz," posthumously published in The Baum Bugle and collected with other horror stories he wrote in Spectral Snow,