Letters of Hoffman to his family. There are seventeen letters to his niece, Matilda Nicholas Whitman, and one letter to his half-sister, Ann Hoffman Nicholas. The correspondence deals with the literary and social life in New York and with the Hoffman family. Two of the letters have notes added by his father, Josiah Ogden Hoffman. Also, an engraved portrait of Charles Fenno Hoffman.

Letters written by and relating to Watts and members of his family. There are 45 letters written by Charles Wats, dated principally from Biloxi, Miss., to members of his family in New York, and 21 letters from, to, and relating to his sister, Helen Watts, and her husband, H. Floyd Jones, and his family. Also, a few letters from Charles Watts, Sr., to his son, Judge Charles Watts. The letters are personal in nature, dealing with family affairs, daily life, and friends.

A photostatic copy of the diary of Strong. The diary, running without interruption from Oct. 1835 through June 1875, contains a wealth of information about life in New York City. Its scope broadens to include the national scene with the outbreak of the Civil War. There is also a miscellaneous assortment of approximately 150 photostatic copies of personal correspondence with family and friends, correspondence during his term as treasurer of the U.S. Sanitary Commission, original drawings, caricatures and doodlings, invitations, guest lists, theater and concert programs, newspaper clippings, a family tree, and photographs. Includes typed index of Columbia references in Strong's diary.

Correspondence and papers of various members of the Kane and Hand families. The collection includes the business correspondence of Oliver Kane of Albany (early 19th century); the correspondence of Moses Hand (1764-1826) of Baltimore; the letters and papers of Thomas Jennings Hand (1824-1908) of New York, with many letters from Professor William Hand Browne of John Hopkins; the diaries and account books of Thomas Jennings Hand, extending from 1859 to 1901, and the household account books of his wife; the family correspondence, accounts, and personal papers of Oliver Kane-Hand (1863-1941); various legal documents and papers of Oliver Kane-Hand (1863-1941); various legal documents and papers of Oliver Kane King, Thomas Jennings Hand, Jr. and Oliver Kane-Hand; and a group of family photographs.

Correspondence, art work, and memorabilia of Rood, including letters to Rood from colleagues, scientists, and artists including Albert Bierstadt, Arthur J. Evans, Joseph Henry, and Charles Eliot Norton. Family letters to and from his wife, Matilda, and children; letters from his wife to her mother, Anna Prunner, in Germany; sketchbooks, drawings, and etchings of Rood and his son, Roland Rood; and photographs and memorabilia.

Correspondence and papers of Low. Both sides of the correspondence are almost intact from 1890 on, with copies of outgoing letters for the two previous decades. There are also four letterpress copybooks, numerous scrapbooks of clippings relating to Low's career and activities, a large number of photographs and other memorabilia, and printed and manuscript copies of many of Low's speeches. Also, contains ten boxes of Annie Low's (Mrs. Seth Low) business and financial correspondence, invitations and regrets, requests for donations, and bills for the period 1914 to 1930.