Search Results 4 items were found.

LC Subject Heading: Technological innovations

  1. 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
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  2. 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
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  3. Item 35685
    Homemade automobile, Lubec, 1935, 1935
    Homemade automobile, Lubec, 1935, 1935
    Contributed by: Lubec Historical Society
    Date: 1935
    Location: Lubec
    Media: Photographic print
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  4. Item 10855
    Marketing potatoes at starch factories, Houlton, ca. 1890
    Marketing potatoes at starch factories, Houlton, ca. 1890
    Contributed by: Aroostook County Historical and Art Museum
    Date: circa 1890
    Location: Houlton
    Media: Photographic print
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