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  1. Drawing for Patent No. 227,229 for electric lights granted to T.A. Edison May 4, 1880

    ...in: Library Catalog Read: Full Text Download: Image No Copyright - United States Request copy of image How can I use this...

    https://library.si.edu/image-gallery/110673

  2. Pacific Telephone and Telegraph Co. from Popular electricity magazine in plain English

    ...in: Library Catalog Read: Full Text Download: Image No Copyright - United States Request copy of image How can I use this...

    https://library.si.edu/image-gallery/110704

Showing results 1 - 2 of about 2 for copyright
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