Books by GERTRUDE CHA WARNER

On a rafting trip in the Pacific Northwest, the Aldens come across the story of a mysterious man who disappeared into the wilderness many years ago. Can you help the Aldens find out where the man went¿and what happened to the treasure he took with him? In this interactive, choose-your-path mystery, readers will make decisions that will help the Boxcar Children crack the case during their white-water adventure.