Plot
Roger's friend Kenneth uses an unusual sea vehicle of his own design to take them to an underwater cave, where a cache of old loot gathered by the mermaids turns out to contain a lot of very valuable old baseball cards.
Book Details
| Author | Jon Buller |
| Publication Year | 1991 |
| Publisher | Random House Inc. |
| Format | Paperback |
| ISBN | 9780679815693 |
| Number of Pages | 48 |