ABC Book Links
Answer.com gives WA History in brief (lots of links!)
Astoria, Oregon & John Jacob Astor
Harlan Bretz & the Channeled Scabland Theory
George & Isabella Bush: Washington's First Family
Dry Falls rivals Niagara Falls (almost!)
Columbia River Keepers: Hanford Reactor
Ice Age: In the Columbia River Gorge
Chapter One: The Far Corner
Geology of Washington by Regions
Burke Museum of Natural History & Culture
Forest Service: Pacific Northwest Region
Marine Habitats--Aquarium of the Pacific
Chapter Two: Fire & Ice
The Burke Museum: Geology of WA
The Dynamic Earth (Plate Tectonics)
Classroom of the Future: Plate Tectonics
Exploring the Environment: Geological Time
Enchanted Learning... Watch Continental Drift!
Extreme Science does Plate Tectonics
More than You need to Know about Plate Tectonics
Continental Drift & Geological Time
ThinkQuest does Continental Drift
NASA explains Continental Drift
Mt. Saint Helen's National Volcanic Monument
Mount Saint Helen's Before, During, & After Eruption (1980) 
Washington's Glacial Mountains
Geology of the Columbia Plateau
Chapter Three: American Indians of the Pacific Northwest
Nova: Mystery of the First Americans
Think Quest: Archeological Adventure
WA Department of Fish & Wildlife
Mr. Donn on Pacific Northwest Coastal Indians
University of WA American Indians of the Pacific Northwest Collection
Coast Salish Villages of Puget Sound
Student Work: Northwest Coastal Indians
Maps: Coastal & Plateau Indians
Homework Help: King County Library System
Chapter Four: The Great Encounter
Chapter Five: Looking West
People of the West: Narcissa & Marcus Whitman
Oregon Trail... everything you'd ever want to know??
Prairie Schooners: Wagons of the Oregon Trail
Frontier Experience on the Northwest Coast (with more links at bottom of that page!)
Chapter Six: Life in Washington Territory
Chief Joseph (includes quotes)
Perspectives on the West: Chief Joseph
Chief Seattle (includes quotes)
Kamiakin and the Yakima Indian War of 1855
Chapter Seven: Leaving the Frontier Behind
Photos from the Gold Rush Days
Chapter Eight: Reform, War, & Inventions
American Memory: Women's Suffrage
IWW and Elizabeth Gurley Flynn
Everett Massacre (Newspaper articles at the time!)
Everett Massacre (from Everett Public Library)
History Link: Everett Massacre
History Link: Anna Louise Strong
Biography of Anna Louise Strong from answers.com
Chapter Nine: Hard Times & the Home Front
History Link: Great Depression
Chapter Ten: Cold War & Civil Rights
Chapter Eleven: Taking Our Place in the World
Chapter Twelve: Making a Living in Washington