Adair Slough (Or.)

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Adair Slough (Or.)

BT Oregon

Adair Slough (Or.)

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Adair Slough (Or.)

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Adair Slough (Or.)

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Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE), Adair Slough, Oregon, 1911.

Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 380. Putting cross bracing on bridge #68 at Adair Slough, Oregon. Chief Engineer/Standard Maintenance Procedure AFE Number CE 453. Correspondence File Number A34. Portland Division. Other subject categories: Bridge Bracing.