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• Text
  Evans-TCP
  
  Philadelphia, Feb. [blank], 1795. Sir, Having from early age been concerned in working mines, and smelting and refining ores in Europe, and also several years engaged in the same line in the United States, I wish to become useful in promoting the opening of mines in this country ...
  Date of publication:
  1795
  

  Author(s):

  Henfrey, Benjamin.
  Description:
  Circular letter advertising a course of lectures on mineralogy; includes a syllabus. Signed: Benjamin Henfrey. From the Gap-Copper-Mines, Lancaster County. Ascribed to the press of John Snowden and William M'Corkle by Evans.
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• Text
  Evans-TCP
  
  A plan with proposals for forming a company to work mines in the United States; and to smelt and refine the ores whether of copper, lead, tin, silver, or gold. / By Benjamin Henfrey. ; Is it not the interest of every citizen of America to promote the working of mines; since all that is obtained from the bowels of the earth becomes an addition to the public stock?
  Date of publication:
  1797
  

  Author(s):

  Henfrey, Benjamin.
  Description:
  (Evans-TCP ; no. N24375) Transcribed from: (Readex Archive of Americana ; Early American Imprints, series I ; image set 32245) Images scanned from Readex microprint and microform: (Early American imprints. First series ; ...
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