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Letter
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/letter00blak
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Thomas Alva Edison letter to Frank H. Scott, dated Menlo Park, New Jersey, 19 February, 1878
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/thomasalvaediso00edis
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Thomas Edison letter to R.D. Worrell Jewelry Co., dated Orange, N.J., 27 September 1910
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/thomasedisonlet00edisa
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Thomas Edison papers
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https://library.si.edu/digital-library/book/thomasedisonpap00moul
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[Graphophone patents] v. 3
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https://library.si.edu/digital-library/book/graphophonepaten03unit
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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
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Collection of United States patents granted to Thomas A. Edison, 1869-1884 v. 1
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https://library.si.edu/digital-library/book/collectionunitev1edis
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Collection of United States patents granted to Thomas A. Edison, 1869-1884 v.2
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/collectionunitevol2edis
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[Graphophone patents] v. 2
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten02unit
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[Graphophone patents] v. 4
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten04unit
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[Graphophone patents] v. 6
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten06unit
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[Graphophone patents] v. 8
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten08unit
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[Graphophone patents] v. 11
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten11unit
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[Graphophone patents] v. 13
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten13unit
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[Graphophone patents] v. 15
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten15unit
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[Graphophone patents] v. 17
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten17unit
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[Graphophone patents] v. 19
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten19unit
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[Graphophone patents] v. 20
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten20unit
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[Graphophone patents] v. 5
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten05unit
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[Graphophone patents] v. 7
...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...
https://library.si.edu/digital-library/book/graphophonepaten07unit