Hawk Eye by David Cory — Read

For a moment the boys stood silent and uncertain. Hawk Eye was the first to speak. "Follow me," he cried, and ran down the bank of the little stream. He soon came to a sandy point where its waters mingled with those of the Minnesota.

"Look," he said. "One of our heavy loaded canoes went aground here," and he pointed to deep marks in the sand. "And here are the toeprints of the thief who pushed them off."