Laura Lee Hope 
Outdoor Girls at Wild Rose Lodge 
or, The Hermit of Moonlight Falls

The "Outdoor Girls" earned their nickname from their fellow townspeople because of their abiding love of hiking, boating, motoring, and exploring. In this volume of the series, the girls have an opportunity to spend some time at a remote lodge in the woods. But soon after arriving, they discover that they won’t be the only occupants of the area.