74 p. Includes sections of Appendix MM: 1880 annual report of Maj. G. L. Gillespie, Corps of Engineers, Bvt. Lieut. Col., detailing construction, surveys and other works of river improvements for the Willamette and Columbia rivers.
42 p. Includes sections of Appendix JJ: 1878 annual report of Maj. John M. Wilson, Corps of Engineers, detailing surveys and works of river improvements for the Willamette and Columbia rivers.
32 p. Includes sections of Appendix FF: Annual reports of Maj. N. Michler, Corps of Engineers, detailing works of river improvements for the Willamette and Columbia rivers.
A black-and-white stereoscopic photograph with the caption "View on the Columbia River, Middle Block House, Cascades". Printing on the cardboard mounting indicates it is number 1264 in the set of "Watkins' Pacific Coast" views of the western states. The view is along the Columbia River. Evergreens and tree-covered mountains line the shores above low rocky beaches or cliffs. Tree-covered islands are in the distance. In the lower right foreground of the picture is a line of railroad tracks, with some sort of wooden frame structures running alongside. Middle Block House was a wooden fort.
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112
78 p. Includes sections of Appendix SS: Report of Capt. William W. Harts, Corps of Engineers; and Appendix TT: Report of Maj. W. L. Fisk, Corps of Engineers. Additional information on these topics can be found by consulting the Indexes to the Chief of Engineers Reports 1866-1912: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1082 and 1913-1917: http://boundless.uoregon.edu/cgi-bin/docviewer.exe?CISOROOT=/wwdl&CISOPTR=1112