File:Photocopy of original construction drawing, dated 25 May 1937. (Original print in the possession of U.S. Army Corps of Engineers, Portland District, Portland, OR.) (M-3-22) HAER ORE,26-BONV,2-F-97.tif
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![File:Photocopy of original construction drawing, dated 25 May 1937. (Original print in the possession of U.S. Army Corps of Engineers, Portland District, Portland, OR.) (M-3-22) HAER ORE,26-BONV,2-F-97.tif](https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/Photocopy_of_original_construction_drawing%2C_dated_25_May_1937._%28Original_print_in_the_possession_of_U.S._Army_Corps_of_Engineers%2C_Portland_District%2C_Portland%2C_OR.%29_%28M-3-22%29_HAER_ORE%2C26-BONV%2C2-F-97.tif/lossy-page1-764px-thumbnail.tif.jpg?20140802051912)
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Original file (4,628 × 3,634 pixels, file size: 16.04 MB, MIME type: image/tiff)