File:Photocopy of original construction drawing, dated 19 March 1940 (Original print in the possession of U.S. Army Corps of Engineers, Portland District, Portland, OR.) (P-40-6) HAER ORE,26-BONV,2-E-132.tif
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![File:Photocopy of original construction drawing, dated 19 March 1940 (Original print in the possession of U.S. Army Corps of Engineers, Portland District, Portland, OR.) (P-40-6) HAER ORE,26-BONV,2-E-132.tif](https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/Photocopy_of_original_construction_drawing%2C_dated_19_March_1940_%28Original_print_in_the_possession_of_U.S._Army_Corps_of_Engineers%2C_Portland_District%2C_Portland%2C_OR.%29_%28P-40-6%29_HAER_ORE%2C26-BONV%2C2-E-132.tif/lossy-page1-773px-thumbnail.tif.jpg?20140802050334)
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