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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.

Main, Thomas, fl. 1869 to Professor Alexander Catlin Twining

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Gilder Lehrman Collection #: GLC07242.05 Author/Creator: Main, Thomas, fl. 1869 Place Written: New York Type: Autograph letter signed Date: 10 November 1869 Pagination: 1 p. : Height: 20.5 cm, Width: 12.7 cm Order a Copy

A letter written by Thomas Main to Professor Alexander Catlin Twining. Main found a series of designs Twining had drawn for an ice machine and was notifying Twining that they were in his possession.

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