Wolf Stalker
2 Rage of Fire
3 Cliff-Hanger
4 Deadly Waters
5 Hunted, The
6 Ghost Horses
7 Over the Edge
8 Valley of Death
9 Escape from Fear
10 Out of the Deep
11 Running Scared
12 Buried Alive
13 Night of the Black Bear

National Parks Mystery (Mysteries In Our National Parks after v. 6) (Juvenile)
# Book Title
1 Wolf Stalker
2 Rage of Fire
3 Cliff-Hanger
4 Deadly Waters
5 Hunted, The
6 Ghost Horses
7 Over the Edge
8 Valley of Death
9 Escape from Fear
10 Out of the Deep
11 Running Scared
12 Buried Alive
13 Night of the Black Bear