One has an internal inscription, as pictured & one is ex-library & the cover has been laminated for protection & has a stamp.

- Quirky Tails (1987)

- Unbelievable! (1987)

- Uncanny (1989)

- Undone! (1993)

- Unmentionable! (1994)

- Uncovered! (1995)

- Unbearable! (1999)