Receipted bill issued by J. Pratt to John Peter De Lancey for $13.00, July 14, 1818

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Certificate issued by the Overseers of the Poor of the Town of Mamaroneck to John Peter De Lancey, exonerating him from liability for maintenance of former slaves, July 5, 1803

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Receipt issued to John Peter De Lancey by Monmouth Lyon, December 14, 1816

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The Simplon Casino, Inc.

Letter from John Peter De Lancey to Thomas Jones, December 19, 1791

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Letter from John Peter De Lancey to Thomas Jones, March 13, 1792

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