Great Lakes Harbors Study--second Interim Report on Duluth-Superior Harbor, Minnesota and Wisconsin

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Great Lakes Harbors Study - Second Interim Report on Duluth-Superior Harbor, Minnesota and Wisconsin

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Great Lakes Basin Library: Interim Bibliography

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Great Lakes Harbors Study

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Great Lakes Harbors Study

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Great Lakes Basin Library: Interim Bibliography: Issuing agencies and authors (January 1969)

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Great Lakes Harbors Study--second Interim Report on Duluth-Superior Harbor, Minnesota and Wisconsin: Letter from the Secretary of the Army Transmitting a Letter from the Chief of Engineers, Dept. of the Army, Dated May 29, 1959, Submitting a Report...requested by the Resolutions of the Committees on Public Works, United States Senate and House of Representatives, Adopted May 18, 1956, June 27, 1956, July 13, 1949, and June 29, 1955

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Great Lakes Harbors Study--interim Report on Ashland Harbor, Wisconsin

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Great Lakes Harbors Study-Final Report

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Numerical Lists and Schedule of Volumes of the Reports and Documents of the Congress

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