Power Plants and Dams relates to dams and plants along the Huron River as well as to other water development projects in Michigan. These files consist of business correspondence on matters of land purchases and flowage rights, blueprints and drawings, contract documents and specifications, computations, and tests. Some of the Huron River projects documented include Argo, Barton, Geddes, Superior and French Landing. Some of the other files concern projects in Allegan, Alpena, Hart, Lowell, Rawsonville, and Sault Ste. Marie. Included with this subgroup are files relating to tests and experiments with draft tubes and the design of multiple arch dams.
Land Purchases 1905-1927
Maps of the Huron River Valley from Surveys made in 1908, 1909
Preliminary Report of the Proposed Development of the Huron River Water Powers 1912
Cost New and Cost Less Depreciation of Huron River Power Plants 1915