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LC Subject Heading: Technological innovations

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Historical Items

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Item 12538

Chapman electric neutralizing machine, Portland Company, ca. 1904

Chapman electric neutralizing machine, Portland Company, ca. 1904

Contributed by: Maine Historical Society Date: circa 1904 Location: Portland Media: Ink on paper

Item 12544

W.H.C. Automatic Voltage Regulators, Portland Company, ca. 1904

W.H.C. Automatic Voltage Regulators, Portland Company, ca. 1904

Contributed by: Maine Historical Society Date: circa 1904 Location: Portland Media: Ink on paper, Photographic print

Item 35685

Homemade automobile, Lubec, 1935, 1935

Homemade automobile, Lubec, 1935, 1935

Contributed by: Lubec Historical Society Date: 1935 Location: Lubec Media: Photographic print