This collection contains primarily business, as well as personal, papers of Stuyvesant Fish and his son, Stuyvesant Fish Jr. It includes 30 letterbooks from father and son, 1903-1944, which contain name indexes and subject indexes (after 1923). The Stuyvesant Fish letterbooks contain business and personal letters sent, including a substantial amount of discussion of political, historical, business, and cultural issues with various people in government, industry, and other occupations. The Fish, Jr. letterbooks focus more on the day-to-day running of the Nochpeem Corporation, a real estate and financial company, and his other business interests. Charles H. Wenman, secretary and treasurer of the Nochpeem Corporation, wrote a substantial number of the letters in the Fish, Jr. letterbooks. Additionally, there is an abundant amount of correspondence (8 folders) discussing the construction, furnishing, and maintenance of Stuyvesant Fish's mansion at 25 East 78th Street in New York City, 1896-1903; along with correspondence connected to Stuyvesant Fish, Jr.'s book, 1600-1914. The collection also contains 5 volumes of household expenses of Stuyvesant Fish and son; Nochpeem Corporation records, particularly receipts, invoices, and rents collected from 19-20 Gramercy Park in New York City by H.W. Fenniman Real Estate; records from the Stuyvesant Fish [Jr.] et. al. vs. Demotte, Inc. et. al. court case involving the 25 East 78th St. property; genealogy of the Fish, Anthon, and related families; Fish Land Corporation records; Fish family photographs, including an album from Stuyvesant Fish's trip(s) to Europe and North Africa in the early 20th century; and Hamilton Fish estate papers, along with his diary notes on "conduct" in Congress.

The box contents are arranged alphabetically according to folder size, with boxes 1-3 containing legal size folders, box 4 containing letter size, and boxes 5 and 6 containing oversize folders. The volumes are arranged alphabetically generally, with some exceptions in order to keep like volume types together.