Grace Harlowe's Overland Riders in the Yellowstone National Park
Chapter XXI—Conclusion
Signal whistles in the night. A mysterious prowler runs away. Hippy makes a discovery, the full meaning of which he is to learn later on. Visitors call at the Overland camp. Bandits arrested upon lieutenant Wingate’s disclosures.
GRACE HARLOWE’S OVERLAND RIDERS IN THE YELLOWSTONE NATIONAL PARK