PreS-Gr 2 Tatterdemalion Maggie, who lives by herself, discovers an elf in her garden. The elf brags that he is a great wish-giver and can give her a new coat. But ``Oat, toat,/ Here's a coat!'' only produces a goat, a boat, and finally a moat. Her wish for a hat brings in stead a cat, a bat, a mat, and a rat. And her sock wish produces a box, two docks, and some rocks. When the elf and Maggie set about cleaning up all this mess, she discovers that although she didn't get her wishes, she got what she really wanteda friend. The con trolled vocabulary sound of the story matches the black ink and pastel water color illustrations so often found in bas al texts. However, beginning readers will be satisfied that Maggie eventually does get what she needsby asking the elf for a float, a pat, and an ox, all of which he turns into the desired cloth ing. You just have to know how to tin ker with these elves to make them work right. Susan Hepler, Windsor Public Library, Conn.