Boston, Little Brown , 1st, 1971, Book: Very Good, Dust Jacket: Very Good, Hardcover in a bright, unclipped dust jacket with light wear.Illustrated in b&w by Robin Jacques. The Craven children have an unusual grandmother. She's an actress, cooks exotic dishes and speaks in riddles. But nothing is more unusual than her horse corral -- because a talking unicorn named Guelph lives there! Clean copy.