A Mouse Prodding a Bear's Toothache, an anthropomorphic children's book illustration, possibly done for Ruth Plumley Thompson (1891-1976), author of the later Oz series post Baum's death, who was one of Coll's clients. Ink with watercolor on illustration board, signed lower right, circa 1925, in black stick frame, matted and glazed, OS: 21" x 33", SS: 14" x 25 1/2", toned.