The Colin de Land collection measures 15.15 linear feet and 0.901 GB and dates from 1968 to 2008, with the bulk of the collection dating from the early 1980s through 2003. The majority of the collection consists of photographic material, primarily snapshots, documenting daily life in and around de Land's gallery American Fine Arts, Co., as well as de Land's pesonal life and affairs. There are candid photographs of exhibition openings, day-to-day gallery operations, art fairs, vacations, social gatherings, and New York City street scenes. Also included are some personal objects belonging to de Land and his wife Pat Hearn, as well as two scrapbooks containing items once decorating the walls of de Land's office at American Fine Arts. The collection includes video recordings documenting trips to Cape Cod, Hearn's illness, and occasional art world events.

The Kimberly Camp papers include biographical material, writings, works of art, audiovisual material, and printed material relating to the career of Kimberly Camp as an artist and arts administrator.

The scattered papers of art critic and writer Charles Henry Caffin measure 1.2 linear feet and date from circa 1883-1973, bulk circa 1883-1918. Found within the papers are an interview transcript, two letters, printed materials, one scrapbook, and family photographs dating from circa 1883 to circa 1911, many by noted photographers Arnold Genthe, Frances Benjamin Johnston, Gertrude Käsebier, Edward Steichen, and Alfred Stieglitz. The scrapbook contains Caffin's columns for the New York American, 1913-1915.

The papers of abstract kinetic artist and sculptor Alexander Calder measure 2.6 linear feet and date from 1926 to 1967. Found within the papers are scattered biographical materials, correspondence, printed materials, photographs, scattered prints and sketches by Calder, and a scrapbook. Of particular interest are the numerous photographs of Calder, including many of Calder at work in his studios, with his family at their home in Touraine, France, exhibitions, and artwork. Among the photographs are several taken by photographer and artist Herbert Matter and a photograph of Pierre Matisse at Calder's home.

The papers or curator and writer John Caldwell measure 1.7 linear feet and date circa 1909 to 1996. The collection documents Caldwell's life and career through a variety of materials, such as biographical material including legal papers relating to the Caldwell Estate, letters from friends and colleagues, writings by Caldwell such as a draft version of a speech and draft essays, printed material including articles written by Caldwell for the New York Times, photographs of Caldwell, family members, dealers, donors, and artists, as well as a video recording documenting the 1985 Carnegie International.

The papers of Italian-American painter, engraver, and printmaker Letterio Calapai measure 3.4 linear feet and date from 1858 through 1993 (bulk 1920s-1993). Found are correspondence, teaching and project files, writings and notes, printed materials, photographs, and sketchbooks, including one with scenes of Rockwell Kent's dairy farm in upstate New York.

The records of New York Byron Gallery measure 16.3 linear feet and date from circa 1950s-1991, with the bulk of the material dating from 1960-1971. The records document the gallery's representation and exhibition of Surrealist and contemporary American artists, as well as the occasional pre-Columbian and Old Masters artwork. Found are over ten linear feet of artists and subject files, fifty-seven exhibition scrapbooks, exhibition catalogs, and sales records. There are also exhibitions catalogs of the Milan Galleria Dell'Arieti.

The papers of Holger Cahill (1887-1960) date from 1910 to 1993, with the bulk of the material dating from 1910-1960, and measure 15.8 linear feet. The collection offers researchers fairly comprehensive documentation of Cahill's directorship of the Works Progress/Projects Administration's (WPA) Federal Art Project (FAP) in addition to series documenting his work as a writer and art critic. Material includes correspondence, reports, artist files, scrapbooks, printed material, and photographs.

Bryson Burroughs photographs of artwork measure 0.6 linear feet and date from circa 1935 and circa 1983. The collection consists of glass plate negatives and copy prints of artwork, primarily paintings, by Burroughs.

The writings of American writer William S. Burroughs and British writer Brion Gysin measure 0.4 linear feet and date from 1963 to 1973, and 1997. This collection includes three books of writings by Burroughs and Gysin and one folder of letters from artist David Bradshaw to art collectors Stanley and Elyse Grinstein about William Burroughs.