- Indians of North America -- Northwest, Pacific -- Fiction
- World War, 1914-1918 + Social aspects -- Northwest, Pacific -- Fiction
- Rock music -- 1991-2000 -- Northwest, Pacific
- Earthquake prediction -- Northwest, Pacific
- Cayuse Indians + Missions -- Northwest, Pacific
- Indians of North America -- Northwest, Pacific
- Folklore -- Northwest, Pacific -- Juvenile literature
- Douglas fir + Life cycles -- Northwest, Pacific -- Juvenile literature
- Obstetricians -- Northwest, Pacific -- 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
- Floods -- Northwest, Pacific -- Juvenile fiction
- Clams -- Northwest, Pacific -- Juvenile literature
- Fur traders -- Northwest, Pacific -- Biography
- Natural history -- Northwest, Pacific -- Juvenile literature
- Forage plants -- Northwest, Pacific
- Wilderness areas -- Northwest, Pacific -- Fiction
- Mushrooms -- Northwest, Pacific
- Brothels -- Northwest, Pacific -- Drama
- Marine habitat conservation -- Northwest, Pacific -- Juvenile literature
- Horses -- Northwest, Pacific -- History
- Indians of North America -- Northwest, Pacific -- Biography -- Juvenile literature
- Fur trade -- Northwest, Pacific -- History -- 19th century
- Wolves -- Northwest, Pacific
- Islands -- Northwest, Pacific -- Fiction
- Logging + Corrupt practices -- Northwest, Pacific
- Old growth forests -- Northwest, Pacific -- Juvenile literature
- Geology -- Northwest, Pacific -- Juvenile fiction
- Geology -- Northwest, Pacific -- Juvenile literature