1. 1
   Some account of Nathaniel Hayward's experiments, with India rubber, which resulted in discovering the invaluable compound of that article with sulphur

   por Hayward, Nathaniel, 1808-1865
   Publicado em 1865

   Norwich, Conn., Bulletin Job Print. Office, 1865.

   12 p.

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2. 2
   Petition of Nathaniel Hayward, for an extension of his invention for using sulphur with India rubber

   por Hayward, Nathaniel, 1808-1865
   Publicado em 1864

   Norwich [Conn.] Bulletin Job Print. Office, 1864.

   13 p.

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