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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.

Unknown [Experiments with French and English 8 inch howitzers on travelling carriages with shells of 42 weights]

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Gilder Lehrman Collection #: GLC02437.01434 Author/Creator: Unknown Place Written: Burlington, New Jersey Type: Manuscript document Date: May 1782 Pagination: 1 p. : docket ; 32.9 x 22.1 cm. Order a Copy

Two charts detailing the results of experiments made with howitzers. One chart depicts the results of the French howitzer experiment, and one depicts the results of the English howitzer experiment. Data indicates, among other things, that 42-weight shells shot from the French howitzer travel about half the distance that the same weight shells travel when shot from an English howitzer of the same size.

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