(From the publisher):
A gift of a lighthouse lamp to the Hollister children from their Uncle Russ is found to contain a real emerald. The discovery prompts a visit to Sea Gull Beach to find out where it came from. In a search for a century-old treasure buried with a mystery ship, the Hollisters experience both fun and real excitement.
Original title: The Happy Hollisters at Sea Gull Beach
Genre: Fiction→ Children & Young Adult→ Mystery