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Oregon Historical Society

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© 2025 Portland State University and the Oregon Historical Society

The Oregon Historical Society is a 501(c)(3) non-profit organization. Federal Tax ID 93-0391599

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Media Collections
Big Summit Prairie

Media Collection: Big Summit Prairie

Big Summit Prairie Map.

Courtesy ESRI Online
Big Summit Prairie Map.

Courtesy ESRI Online

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© 2025 Portland State University and the Oregon Historical Society

The Oregon Historical Society is a 501(c)(3) non-profit organization. Federal Tax ID 93-0391599

© 2025 Portland State University and the Oregon Historical Society

The Oregon Historical Society is a 501(c)(3) non-profit organization. Federal Tax ID 93-0391599

.