  1987 - Mystery on Nine Mile Marsh (Paperback) → Paperback ISBN-13: 9780590403979 ISBN-10: 0590403974 Genre: Children's Books ?  1981 - Mystery on the Ninemile Marsh (Paperback) ISBN-13: 9780590061629 ISBN-10: 0590061623 Genre: Mystery, Thriller & Suspense ?  1976 - The Ghost Rock Mystery (Paperback) → Paperback ISBN-13: 9780590025133 ISBN-10: 0590025139 Genre: Children's Books 1  1970 - Mystery in Hidden Hollow (Other) ISBN-13: 9780397311477 ISBN-10: 0397311478 Genre: Children's Books 1  1963 - Mystery By Moonlight (Other) → Paperback ISBN-13: 9780397307029 ISBN-10: 0397307020 Genre: Children's Books ?  1959 - Mystery on Echo Ridge (Hardcover) ISBN-13: 9780397307036 ISBN-10: 0397307039 Genre: Mystery, Thriller & Suspense ?     |
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