Bundle.of 10 hardcover books

2 The Mystery of the Stuttering Parrot

3 The Mystery of the Whispering Mummy

4 The Mystery of the Green Ghost

5 The Mystery of the Vanishing Treasure

6 The Secret of Skeleton Island

7 The Mystery of the Fiery Eye

8 The Mystery of the Silver Spider

9 The Mystery of the Screaming Clock

10 The Mystery of the Moaning Cave

11 The Mystery of the Talking Skull

Various conditions.  Some have clear contact covers. Free postage