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.

The papers of Violetta Susan Elizabeth White Delafield, consist of her writings, correspondence, documents, photographs, memorabilia, and miscellaneous material. Her writings and notes deal with her research in mycology and horticulture, and much of the correspondence reflects these topics. In addition, there is correspondence with family members such as her sister and brother, Lucy A. White Morris and Alain C. White. The documents contain papers of the White family as well as correspondence bearing on their estate. Material regarding the annual meetings of the Garden Club of America makes up the bulk of the miscellaneous material series.