Every chaste little New England town has its eccentric-and Gilead is no exception. To the two Betts children, Ben and Martha, Miss Wycherly, portrait painter of an indeterminate age, is not only a benevolent eccentric, but something of a sorceress. For when the children have their portraits painted they are initiated by Miss Wycherly into that magic world of the canvas where they wander freely among the illustrious personages of the portrait repertoire, and are astounded by the virtousity of the artist's cats in saving their mistress from financial disaster. Edward Fenton's handling of characters and his evocative descriptions are admirable. However, in order to write fantasy effectively, the author must have a precise notion of the world he would create. In Once Upon a Saturday, the fantasy runs away, and like the brooms in The Sorcerer's Apprentice, both the author and his characters become hopelessly drawn into the whirlpool of the book's imaginative projection.