Our Collection

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.

Unknown Description of the Scale of accompanying Dycas's Hydrometer

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Gilder Lehrman Collection #: GLC08993.02 Author/Creator: Unknown Place Written: s.l. Type: Broadside Date: 1790 Pagination: 1 p. ; 41 x 33.5 cm. Order a Copy

Explains how to use and read Dycas's Hydrometer, a device invented to determine the strength of alcoholic beverages, so that the proper tax could be applied.

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