the hardy boys mystery stories 17 : the secret warning
Franklin W. Dixon
- Canada Grosset & Dunlap c1938
- 176 illustrations 19cm
The Hardy Boys: The Secret Warning (#17) follows Frank and Joe Hardy as they investigate a suspected insurance fraud case involving a sunken ship. They help their father, Fenton Hardy, by diving for a missing, million-dollar Egyptian Pharaoh's golden head, while facing threats from criminals and investigating the mysterious "Whalebone Island".