Again Joe groped into the sack. His fingers encountered a bulky packet. He withdrew it and the packet proved to be comprised of long, imposing-looking documents, held together by a rubber band. On the surface of the outer document, when they held it up to the light, they read the information that it was a negotiable bond for $5,000 issued by the City of Bayport.

“That settles it,” said Frank. “We’ve found the treasure.”

The boys looked at one another in triumph.

“Jackley wasn’t lying after all. He did hide the stuff in the old tower. And Mr. Robinson wasn’t in league with him and didn’t find it after it was hidden,” ruminated Joe. “We can clear up the whole affair now.”