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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.

Cobb, Howell, 1815-1868 to Robert E. Rogers and Henry Vethake

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Gilder Lehrman Collection #: GLC03689 Author/Creator: Cobb, Howell, 1815-1868 Place Written: Washington, District of Columbia Type: Letter signed Date: 15 September 1857 Pagination: 1 p. : Height: 24 cm, Width: 18 cm Order a Copy

Rogers and Vethake were appointed Treasury Department commissioners in July 1857. Requests them to report to him as soon as possible if they intend to accept the appointment, and if so they are to "arrange with the Director of the Mint to give Dr. Barclay the proper facilities for testing his alleged discovery." James T. Barclay had developed tests to detect counterfeit coinage. Rogers and Vethake accepted the commission and verified Barclay's discovery. Written as Secretary of the Treasury.

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