Secret of the Royal Treasure (Time Machine, No. 13)

Master of the Royal Secret (Paperback or Softback)

The Hidden Treasure (Paperback or Softback)

Time Machine 1: Secret of the Knights (Paperback or Softback)

Time Machine 13: The Secret of the Royal Treasure By Carol Gaskin - New Copy ...

The Hidden Treasures of Paradise (Paperback or Softback)

The Secret Of A Royal Mirror (Paperback or Softback)

Time Machine - Secret of the Royal Treasure by Carol Gaskin (1986, Mass Market)