The search for the truth about some strange fossil bones takes Chuck, David, and the extraordinary Tyco Bass into the unknown regions of the Mushroom Planet.
Eleanor Frances (Butler) Cameron (1912–1996) was a Canadian children's author. Her first book was a novel for adults, The Unheard Music (1950). For The Court of the Stone Children (1973), she won the U.S. National Book Award in category Children's Books.
Eleanor Cameron. Wikipedia.