Martha's children, Roger and Ann, and their cousins, Aunt Katharine's children Eliza and Jack, find that the combination of a toy castle, Scott's "Ivanhoe", and a little magic can build another wonderful series of adventures. The Tales of Magic contain many references to the children's novels of E. Nesbit (1890s to 1910s); "Knight's Castle" pays explicit tribute to Nesbit's "The Magic City". It also refers explicitly to the cartoons of Charles Addams. ("Half Magic" includes a reference to a short story by Saki.) "Knight's Castle" won the Ohioana Book Award for Juvenile Literature in 1957.