The papers of Prosper Montgomery Wetmore, grandfather of Violetta White Delafield, consist of twelve bound volumes (1818-1874) of correspondence, as well as loose material including letters by Wetmore, genealogical papers, miscellaneous material, and printed matter. The bound volumes contain correspondence between Wetmore and his family, business, policial, civic, and Eleventh Regiment New York State Militia colleagues, also some of his poems and essays, documents, maps, miscellaneous material, and printed matter. Some of the correspondents included in the bound volumes are Townsend Harris, William H. Seward, Benson J. Lossing, William Cullen Bryant, and Martin Van Buren.