- Floods -- Northwest, Pacific -- Juvenile fiction
- Natural disasters -- Northwest, Pacific
- Animals -- Northwest, Pacific -- Juvenile literature
- Trees + Effect of poaching on -- Northwest, Pacific
- Indian architecture -- Northwest, Pacific -- Juvenile literature
- People with bipolar disorder -- Northwest, Pacific -- Biography
- Tsunamis -- Northwest, Pacific
- Draft horses -- Northwest, Pacific -- History
- Wolves -- Northwest, Pacific -- Pictorial works
- Clams -- Northwest, Pacific -- Juvenile literature
- Fur traders -- Northwest, Pacific -- Biography
- Natural history -- Northwest, Pacific -- Juvenile literature
- Nez Percé Indians + Missions -- Northwest, Pacific
- Forage plants -- Northwest, Pacific
- Mushrooms -- Northwest, Pacific
- Horses -- Northwest, Pacific -- History
- Brothels -- Northwest, Pacific -- Drama
- Wilderness areas -- Northwest, Pacific -- Fiction
- Mining camps -- Northwest, Pacific -- Drama
- Marine habitat conservation -- Northwest, Pacific -- Juvenile literature
- Wolves -- Northwest, Pacific
- Islands -- Northwest, Pacific -- Fiction
- Logging + Corrupt practices -- Northwest, Pacific
- Indians of North America -- Northwest, Pacific -- Biography -- Juvenile literature
- Fur trade -- Northwest, Pacific -- History -- 19th century
- Geology -- Northwest, Pacific -- Juvenile fiction
- Old growth forests -- Northwest, Pacific -- Juvenile literature
- Geology -- Northwest, Pacific -- Juvenile literature
- Indian art -- Northwest, Pacific
- Lumber trade + Corrupt practices -- Northwest, Pacific
- Legends -- Northwest, Pacific
- Scientific expeditions -- Northwest, Pacific -- History -- 19th century
- Earthquakes -- Northwest, Pacific -- Young adult literature
- Physical geography -- Northwest, Pacific -- Juvenile literature
- Indians of North America + Food -- Northwest, Pacific -- Juvenile literature
- Indian women -- Northwest, Pacific -- Biography
- Post-traumatic stress disorder + Patients -- Northwest, Pacific -- Biography
- Wheat trade -- Northwest, Pacific -- Fiction
- Sabotage -- Northwest, Pacific -- Fiction
- Forest animals -- Northwest, Pacific -- Juvenile literature
- Eccentrics and eccentricities -- Northwest, Pacific -- Drama
- Forest ecology -- Northwest, Pacific -- Juvenile literature
- Indians of North America -- Northwest, Pacific -- Dictionaries
- Mollusk culture -- Northwest, Pacific -- Juvenile literature
- Wilderness areas -- Northwest, Pacific -- Drama
- Deforestation -- Northwest, Pacific
- Fantasy gamers -- Northwest, Pacific
- Bed and breakfast accommodations -- Northwest, Pacific -- Fiction
- Plate tectonics -- Northwest, Pacific
- Sea otter + Conservation -- Northwest, Pacific -- Juvenile literature