Edward N. Kent of the United States Assay Office at New York discusses the installation of two coils for silver-drying closets.

Edward N. Kent of the United States Assay Office at New York writes to inform James Curtis Booth (1810-1888) that he prefers to use hard-wood charcoal from New York rather than depend upon supplies from Philadelphia.

Edward N. Kent of the United States Assay Office at New York expresses the hope that he will receive the patents for his sifting sweeps machine "very soon."

Edward N. Kent of the United States Assay Office at New York writes concerning a controversy regarding Kent's use of James Curtis Booth's (1810-1888) correspondence.

Edward N. Kent of the United States Assay Office at New York writes to thank James Curtis Booth (1810-1888) for his kind words regarding Kent's sweeps washing apparatus.

Edward N. Kent of the United States Assay Office at New York discusses monetary values of gold and silver ores retrieved via his newly invented sifting machinery.

Edward N. Kent of the United States Assay Office at New York writes a follow-up from his letter of March 7 to describe the testing of his machine for sifting sweeps.

Edward N. Kent of the United States Assay Office at New York describes a machine he devised intended for sifting sweeps.

Edward N. Kent of the United States Assay Office at New York writes to James Curtis Booth (1810-1888) with a need for two additional furnaces and discusses alterations made to the office.

Edward N. Kent of the United States Assay Office at New York informs James Curtis Booth (1810-1888) that no vacancies currently exist in the New York office.

Edward N. Kent of the United States Assay Office at New York requests buckskin gloves and other supplies from James Curtis Booth (1810-1888).

Edward N. Kent of the United States Assay Office at New York informs James Curtis Booth (1810-1888) of the start-up of the New York assay operations.

Edward N. Kent of the United States Assay Office at New York advises James Curtis Booth (1810-1888) on the purchase of some spar.

Edward N. Kent writes to James Curtis Booth (1810-1888) fretting that the position he applied to at the United States Assay Office may be filled politically.

Edward N. Kent writes to James Curtis Booth (1810-1888) with his decision to apply to the Assayer's position at the Unites States Assay Office in New York.

Edward N. Kent writes to James Curtis Booth (1810-1888) to solicit advice concerning the position of Assayer at the United States Assay Office at New York.

Henry M. Morfit (1793-1865) asks questions about the commercial value of cobalt ore.

Morfit, a claims lawyer in Washington, D.C. and a political figure in the Andrew Jackson presidential administrations, appears to…

Henry M. Morfit (1793-1865) and James Curtis Booth (1810-1888) have their application for a refining patent accepted, but the remuneration offered is less than expected.

Morfit, a claims lawyer in Washington, D.C. and…

Henry M. Morfit (1793-1865) discusses aggravation from Richard Sears McCulloch (1818 – 1894), a competitor for the refining patent submitted by James Curtis Booth (1810-1888) and Henry Morfit's son, Campbell Morfit…

Henry M. Morfit (1793-1865), a claims lawyer in Washington, D.C. and a political figure in the Andrew Jackson presidential administrations, appears to have served as go-between for his son, Campbell Morfit (1820-1897),…

Henry M. Morfit (1793-1865) sends confidential news to James Curtis Booth (1810-1888) regarding Richard Sears McCulloch (1818 – 1894), a competitor for the refining patent submitted by Booth and Henry Morfit's son,…

Henry M. Morfit (1793-1865) writes more on a proposed partnership with Richard Sears McCulloch (1818-1894) in response to his letter of August 17th. Morfit urges caution and points to several drawbacks in McCulloch’s…

Henry M. Morfit (1793-1865) writes to James Curtis Booth (1810-1888) with a possibility of compromise concerning Richard Sears McCulloch’s (1818 – 1894) rival patent.

Morfit, a claims lawyer in Washington, D.C. and a…

Henry M. Morfit (1793-1865) writes to discuss the patent application sent by his son, Campbell Morfit (1820-1897) and James Curtis Booth (1810-1888).

Morfit, a claims lawyer in Washington, D.C. and a political figure…

Henry M. Morfit (1793-1865) writes a second time due to a mix up in addresses.

Morfit, a claims lawyer in Washington, D.C. and a political figure in the Andrew Jackson presidential administrations, appears to have…