Spokane, Portland and Seattle Railway Engineering Drawing: End Sections Main Girder, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: End Sections Main Girder, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Erection Plan, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Floor Beams and Connection Plate, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Foundations, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80. Sheet N - 2 - 13, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Foundations, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80. Sheet N - 2 - 13, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: Foundations, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80. Sheet N - 2 - 13, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: General Plan and Details, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80. Sheet NO - 209, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: General Plan of Center, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: General Plan of Lock Gears, Bridge A94.9 - John Day River, west of Knappa, Oregon, Line Segment 440, Milepost 94.80, undated.
Spokane, Portland and Seattle Railway Engineering Drawing: General Plan, Bridge A86.6 - Overpass, Knappa, Oregon, Line Segment 440, Milepost 84.71. Sheet TV - 426, 1961. Note: Frame trestle