Title: Hardy Boys Starter Set (House on the Cliff / Hunting for Hidden Gold / Missing Chums / Secret of the Old Mill / Tower Treasure
Description: [Volume] 1. [The tower treasure](https://openlibrary.org/works/OL47950W) ([1987]) --
[volume] 2. The house on the cliff ([1987]) --
[volume] 3. The secret of the old mill ([1990]) --
[volume] 4. The missing chums ([1990]) --
[volume] 5. Hunting for hidden gold ([1991]).