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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.

Treadwill, A.B. (fl. 1860-) Teaching Certification

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Gilder Lehrman Collection #: GLC02172.01 Author/Creator: Treadwill, A.B. (fl. 1860-) Place Written: Newton, MI Type: Autograph document signed Date: 3 May 1860 Pagination: 1 p. : envelope ; 21.5 x 17.5 cm. Order a Copy

This is to certify that Charles B Porter his examination and is able to give instruction for two years in Newton, Michigan.

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