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Plan for a Harbor of Refuge at Ludington, Michigan

Proposed Bridge Over Straits of Mackinac Between Mackinaw City and St. Ignace, State of Michigan (profile drawing)

Proposed Profile: 22KV Submarine Cables Across the Straits of Mackinac between McGulpin Pt., Emmet Co., and Pt. La Barbe, Mackinac Co., Michigan

Detroit River, Michigan: Trenton Channel Extension Plan of improvement

Trenton Channel and Turning Basin, Section "C", as of 31 January 1963

Trenton Channel and Turning Basin, Section "C"

Detroit River, Michigan - Trenton Channel, Sections B and C, Period Ending March 11, 1963

Trenton Channel and Turning Basin, Section "C"

Trenton Channel - Condition of Turning Basin

Dredging Plan, Trenton Channel - Dredging Progress

Detroit River, Michigan - Trenton Channel, Sections B and C Soundings Prior to Dredging (updated_

Detroit River, Michigan - Trenton Channel, Sections B and C Soundings Prior to Dredging