The Mappa Papers include 47 letters, 1778-1833 and undated, the majority being for the period 1789-1795. Almost all are in Dutch, with the rest in French. The correspondence is both personal, and pertaining to the business of the Holland Land Co., particularly in the Boonville and Oldenbarneveldt (Trenton) areas of Oneida County, N. Y.

The Blodgett- Mudge Family Papers contains one series: Family Papers and consists of legal documents related to land ownership and businesses, receipts and writings. Writings include several pieces of correspondence.

Correspondence and letter books, 1845-1889, of Charlemagne Tower, as well as legal and business papers related to real estate transactions, coal and iron lands in Pennsylvania, and the family affairs of the Tower family.

The surviving files of official correspondence, reports, documents, and printed materials of King's College from 1750 to 1784 and Columbia College from 1785 to 1890, as well as Columbia University up to 1964. The King's College era materials include grants, deeds, indentures, lists of governors, leases, accounts, etc. The Columbia College era papers commence with documentation regarding the attempts to revive the college at the end of the American Revolution. In the later period these papers primarily supplement and document the minutes of the meetings of the Board of Governors and the Board of Trustees. Much material was destroyed and scattered in the late 19th century leaving this collection quite incomplete.

This collection contains the papers of Donald C. Brace, one of the founders of the New York publishing house Harcourt, Brace & Company. Materials include correspondence, business records, and proofs of the U.S. editions of Virginia Woolf's works Orlando, The Waves, and The Second Common Reader; the latter two proofs include the author's corrections.

The collection consists of correspondence from patients and other doctors; bills for drugs, medical books and periodicals; receipts and patients' bills; correspondence relating to land speculations in Illinois and Michigan; day books and ledgers; and the sign from his office in Rochester.

The collection consists primarily of the business and legal records of the Sibley family, including Hiram, Hiram Watson, and Harper.

Synagogue records of the Jewish Archives of Greater Buffalo. Records of Congregation B'rith Sholem (Pine Street Shul) and Temple Sinai include account books, record books, receipt and memo pads, photographs, deeds, correspondence, committee minutes, and bulletins.

A collection of documents including deeds, leases, agreements, and land titles relating to transactions in upstate and Western New York. Includes records relating to Albany, Monroe County and the Pulteney Purchase.

The collection is representative of the activities of small businessmen in New Gloucester Maine and in the details of local government. Included are account books, business communications, letters, receipts, deeds, mortgates, personal and social correspondence of the Otis Nelson family, and letters of Lilly Nelson.

The Pierrepont family papers (1761-1918) document the intersection of commercial, civic and personal interests across three generations of one of the most prominent and influential families of nineteenth century Brooklyn, New York. The bulk of the collection concerns the business dealings of Henry Evelyn Pierrepont from 1838 to his death in 1888. This especially includes an extensive set of accounting and transactional records concerning the Pierrepont Stores, the family's warehouse on Brooklyn's East River waterfront; these include records of ships arriving at the Stores and their cargoes delivered. Additionally, there are substantive correspondence, legal documents and other materials concerning the Union Ferry Company, of which Henry was an officer. In addition to commerce and shipping, a major theme of the collection is that of land acquisition in Brooklyn Heights and at the adjacent waterfront in the early nineteenth century, and the development of that property over the course of the century. Included in the collection are correspondence, deeds, indentures, leases, accounting records, diaries, maps, invoices, receipts, business proposals, legal filings, clippings, and historical and genealogical manuscripts.

These are the personal papers documenting a segment of the life of local communal leader, Ralph L. Halpern. materials include speeches, and other material relating to his volunteer service in the Jewish community.