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At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 85,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World through the end of the twentieth century.

Hamilton, Alexander, 1757-1804 Collection of two documents related to Dycas's Hydrometer [Decimalized .01-.02]

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Gilder Lehrman Collection #: GLC08993 Author/Creator: Hamilton, Alexander, 1757-1804 Place Written: s.l. Type: Header Record Date: 1790 Pagination: 2 items Order a Copy

Circular letter to customs officers regarding the use of Dycas's Hydrometer, accompanied by directions for using the device.

Hamilton, Alexander, 1757-1804

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