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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.

Mostyn, Samuel (fl. 1778) to Thomas Pennant

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Gilder Lehrman Collection #: GLC09023 Author/Creator: Mostyn, Samuel (fl. 1778) Place Written: Philadelphia, Pennslyvania Type: Autograph letter signed Date: 7 June 1778 Pagination: 3 p. Order a Copy

British officer in occupied Philadelphia discusses threats against Loyalists: "Peace is not wish'd at all nor hardly talked of ... The rebels have publish'd a list of Persons whom they mean to threat as Traytors [sic] to the States of America, if they will not give themselves up."

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