The papers of sculptor and portrait painter Henry Kirke Brown measure 1 linear feet and date from 1836 to 1893. The collection includes Brown's correspondence with his wife, Lydia Louise Udall, his nephew, Henry Kirke Bush-Brown, and other family members. Also included are letters from artists George Catlin, George Fuller, Sanford R. Gifford, James Reid Lambdin, Louis Lang, Erastus Dow Palmer, Hiram Powers, Horatio Stone, and others; five news clippings; and miscellaneous notes.

This collection contains photographic material taken during Jerry L. Thompson's career at the Metroplitan Museum of Art (New York, NY). The collection includes black-and-white photographic prints, negatives and color transparencies documenting the work of four prominent American sculptors: Erastus Dow Palmer, Frederic Remington, Augustus Saint-Gaudens, and John Quincy Adams Ward.

The collection of artists' letters compiled by Mary and John McGuigan Jr. measure 0.6 linear feet and date from 1794-1938. The collection is comprised of a group of letters, writings, and signed documents to and from a variety of artists, art administrators, art critics, historians, and art-related organizations assembled from multiple sources. It also includes associated printed material with some documents and a few photographs, including carte de visites and cabinet cards.

The papers of Hudson River School painter Jervis McEntee measure 1.6 linear feet and date from 1796 and 1848 to 1905. Letters from close friends and family members to McEntee include many from his mentor Frederic Edwin Church, and fellow artists Samuel Putnam Avery, George Henry Boughton, Sanford Gifford, Richard Henry, Eastman Johnson, Elizabeth B. Stoddard, John Ferguson Weir, Worthington Whittredge, and others. Papers relating to the McEntee family include obituaries, a family genealogy, and letters from and regarding family members. There are also papers relating to the Vaux family (McEntee's brother-in-law's family) and American architect and landscape artist Calvert Vaux, who designed a studio for McEntee. Of special significance are five volumes of diaries dating from 1872 through 1890 which provide a detailed depiction of the American art world in the 1870s and 1880s.

Originally assembled by the Metropolitan Museum of Art for study purposes, this collection is comprised of 2,790 black-and-white photographs documenting the work of 250 sculptors.

The papers of sculptor Hiram Powers measure 12.4 linear feet and date from 1819 to 1953, with the bulk of the material dating from 1835 to 1883. Over two-thirds of the collection consists of Powers' correspondence with business associates, purchasers of his artwork, and numerous friends in the United States and Florence, Italy. Of note is Powers' "Studio Memorandum," from 1841 to 1845, which contains dated notations of letters written, receipts and expenditures, business contacts, works in progress, commissions and price quotations for work, comments on problems encountered during studio work, and other notes. Additional papers include scattered biographical material, financial and legal records, printed materials, photographs of Powers, his family, artwork, as well as an extensive collection of carte de visite and cabinet card portraits of many notable figures. Also found is a small amount of artwork by Powers and others, a scrapbook, and two autograph and memorabilia albums.

This collection contains over 37,000 35mm slides, 3,000 glass lantern slides and garden files that may include descriptive information, photocopied articles (from journals, newspapers, or books), planting lists, correspondence, brochures, landscape plans and drawings. Garden files were compiled by Garden Club of America (GCA) members for most of the gardens included in the collection. Some gardens have been photographed over the course of several decades; others only have images from a single point in time. In addition to images of American gardens, there are glass lantern slides of the New York Flower Show (1941-1951) and trips that GCA members took to other countries, including Mexico (1937), Italy, Spain, Japan (1935), France (1936), England (1929), and Scotland. A number of the slides are copies of historic images from outside repositories including horticultural and historical societies or from horticultural books and publications. The GCA made a concerted effort in the mid-1980s to acquire these images in order to increase its documentation of American garden history. Because of copyright considerations, use of these particular images may be restricted.