Forts of the American Frontier 17761891: California, Oregon, Washington, and Alaska: 105 (Fortress)

Forts of the American Frontier 1820 91: Central and Northern Plains (Fortress)

Forts of the American Revolution 1775 83: 110 (Fortress)

Desolate Barns of the American West: Abandoned Institutions Northern California, Oregon, Washington,...

Plants of the Pacific Northwest Coast: Washington, Oregon, British Columbia and Alaska