Biographical sketches; membership cards; correspondence, chiefly with family members; an account book; lists of work; writings; art work, including sketches, watercolors, etchings, lithographs, charcoal sketches and 10 sketchbooks, and oils on canvas; photographs of Wilder, Henry C. White and others, and of Wilder's and White's work and studios; exhibition catalogs, and …

The papers of painter and naturalist, Abbott Handerson Thayer, and the Thayer family date from 1851 to 1999, with the bulk of the material dating from 1881 to 1950, and measure 5.12 linear feet. Thayer's painting career, interest in concealing coloration (camouflage) in nature, and relationships with artists, patrons, family, and friends are documented through correspondence, writings, scattered legal and financial records, printed materials, and a scrapbook. Photographs are of Thayer, his family, studio, and friends, including artists. The collection also contains family papers created by his second wife, Emma Beach Thayer, his son Gerald, his daughters Mary and Gladys, and Gladys' husband David Reasoner, who managed Thayer's estate after his death.

This collection is primarily the work of one individual, Donald Harvey Sultner, known professionally as Donald Sultner-Welles (1914-1981). The collection forms a written and visual record of Sultner's family, life, and career from 1913-1980. Its major strength is Sultner's photographic documentation of the world during his travels, ca. 1950-1980. Work by other photographers …

The papers of abstract painter Milton Avery measure 2.8 linear feet and date from 1926 to 1982, with the bulk of the collection dating from 1950 to 1982. Almost the entire collection consists of records of the Milton Avery Trust (2.4 linear feet) maintained by Avery's wife Sally, who served as a trustee. Milton Avery's business and personal correspondence (five folders) contains letters from friends and fellow artists, including a few from George Duthuit, Louis Eilshemius, Marsden Hartley, Wallace Putnam, and Mark Rothko. Also found are scattered writings about Avery, price lists, estate records, exhibition announcements and catalogs, and news clippings.

The Walt Kuhn Family papers and Armory Show records measure 31 linear feet and date from 1859 to 1984, with the bulk of material dating from 1900 to 1949. Papers contain records of the legendary Armory Show of 1913, also known as the International Exhibition of Modern Art, which introduced modern European painting and sculpture to the American public. Papers also contain records of the Association of American Painters and Sculptors (AAPS), the artist-run organization that mounted the Armory Show; records of the New York artists' clubs the Kit Kat Club (founded 1881) and the Penguin Club (founded 1917); and the personal and family papers of New York artist Walt Kuhn (1877-1949), one of the primary organizers of the Armory Show.

The papers of New York artist Philip Pearlstein measure 31.8 linear feet and 16.68 GB and date from circa 1940 to 2008. The collection is comprised of biographical material, correspondence, interviews and transcripts, writing projects and lectures, personal business records, printed material, three scrapbooks, photographs and moving images, documentary production material, digital records, sound and video recordings, and motion picture film that documents Pearlstein's career as a painter and educator.

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.

The Macbeth Gallery records provide almost complete coverage of the gallery's operations from its inception in 1892 to its closing in 1953. Through extensive correspondence files, financial and inventory records, printed material, scrapbooks, reference and research material, and photographs of artists and works of art, the records document all aspects of the gallery's activities, charting William Macbeth's initial intention to lease his store "for the permanent exhibition and sale of American pictures" through over sixty years of success as a major New York firm devoted to American art. The collection measures 131.6 linear feet and dates from 1838 to 1968 with the bulk of the material dating from 1892 to 1953.

The records of the Downtown Gallery date from 1824 to 1974 (bulk 1926-1969) and measure 109.56 linear feet. The records present a comprehensive portrait of a significant commercial gallery that operated as a successful business for more than forty years, representing major contemporary American artists and engendering appreciation for early American folk art. There is an unprocessed addition to this collection dating circa 1970 of a single financial/legal document.

The André Emmerich Gallery records and André Emmerich papers measure 311.4 linear feet and date from 1929 to 2009. The collection documents the business of the André Emmerich Gallery as well as André Emmerich's life and activities related to the business of selling art. Gallery records include correspondence; appointment books; administrative and subject files; exhibition files; artist files and accounts; inventory, sales, purchase, and consignment records; chronological files; financial and legal records; printed materials; original artwork; photographic and audiovisual materials. Also found are personal papers and records relating to André Emmerich. A small addition received in 2014 includes general correspondence, administrative files, exhibition files, artists' files, inventory records, consignment records, printed material, photographic materials, and André Emmerich personal papers and records.