Correspondence, documents, diaries, physician's "visiting books," household accounts, photographs, and memorabilia of various members of the Hayes-Coleman family of Canandaigua, New York. They are primarily concerned with the Canandaigua area, but they include, either in the original or in transcript, diaries and letters relating to Frederick, Maryland, Brooklyn, New York, ranch life in Colorado, and the life of an art student in Paris in 1890. Transcripts of practically all of the material, with illustrations and careful documentation, have been made by Mrs. Elizabeth Hayes Goddard.

The collection includes correspondence, photographs, genealogical data, diaries, programs, clippings, legal and financial papers, and memorabilia of Nelson P. Darling and his son Frank Nelson Darling. There are letters from Billie Burke, Anton Long, Gustav C. Luders, Leopold Stokowski, and Florenz Ziegfield.

This collection consists of additions to the William Henry Seward papers after the main collection was microfilmed in 1981.

Primarily a collection of correspondence, business papers, diaries, journals, essays, etc., of Horatio Gates Warner (1801-1876) and his immediate family.