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  1. Astronomical observations made at Hudson Observatory, latitude 41 ̊14' 42".6,north, and longitude 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/astronomicalobs00loom

  2. On the storm which was experienced throughout the United States about the 20th of December, 1836

    ...(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/onstormwhichwase00loom

Showing results 1 - 2 of about 2 for copyright
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