The Oliver Ingraham Lay, Charles Downing Lay, and Lay Family Papers measure 10.54 linear feet and date from 1789 through 2000, with the bulk of the material dating from circa 1870-1996. The collection presents an overview of the personal lives and careers of painter, Oliver Ingraham Lay and his son, landscape architect, Charles Downing Lay. In addition, there are the papers of Lay family members and friends, including those of the Marian Wait Lay family (wife of Oliver Ingraham Lay) and of the Laura Gill Lay family (wife of Charles Downing Lay). Also found are the papers of the landscape and nature painter Fidelia Bridges. The collection consists of biographical material, correspondence, diaries, writings and notes, scrapbooks, family business records, exhibition files, printed material, as well as original artwork, sketches, a sketchbook, landscape designs, and photographs.

The papers of Boston area portrait painter Rose Lamb date from circa 1870 to 1961, with the bulk of the material dating from circa 1870 to 1900, and measure 0.8 linear feet. The collection contains a diploma; letters from artists, writers, historians, and others, including nine letters from former teacher and friend William Morris Hunt; photographs of unidentified people and artwork by Lamb; and original artwork, including a sketchbook, charcoal drawings, watercolors, and two oil paintings.

The papers of realist painter, muralist, and educator Leon Kroll date from circa 1900 to 1988 and measure 8.7 linear feet. The collection documents Kroll's painting career, teaching, and active participation in numerous art organizations. Over one-half of the collection is correspondence with artists, schools, galleries, museums, patrons, arts organizations, and others. Also found are scattered biographical material, writings and notes, legal and financial records, exhibition catalogs, clippings, other printed material, photographs of Kroll and colleagues, loose drawings and nine sketchbooks.

The Sylvester Rosa Koehler papers measure 5.4 linear feet and date from 1833 to 1904, with the bulk of the material dating from 1870 to 1890. The collection consists primarily of Koehler's extensive correspondence to and from many notable artists and printmakers such as Jean F. Harfin, John M. Falconer, Frederick Juengling, and James D. Smillie, as well as friends, and family members and professional correspondence concerning Koehler's activities as a writer, curator, and editor of the American Art Review. The collection also contains financial records and other miscellaneous items.

The papers of architect and designer Florence Knoll Bassett, measure approximately 2 linear feet dating from 1932 to 2000. Through correspondence, sketches, drawings, designs, subject files, photographs, and printed material, the collection selectively documents Knoll Bassett's education, her work with Knoll Associates from the 1940s until her resignation in 1965, and projects undertaken since her retirement. It is an important source of information on the development of interior architecture and design from the 1940s to the 1970s.

The records of modernist New York City Kootz Gallery measure 7.1 linear feet and date from 1923-1966. They consist of scattered correspondence and exhibition files; photograph files of artists, including ones for Picasso, William Baziotes, and Hans Hofmann, among many others; 23 scrapbooks; photographs and slides of the gallery and exhibitions; and scattered personal papers of Samuel M. Kootz.

The papers of New York City sculptor Charles Keck (1875-1951) measure 8.6 linear feet and date from circa 1905-circa 1954. The papers provide scattered documentation of Keck's life through thirteen letters, two speeches, lists of artwork with price and sales information, printed material, and photographic material, including photos of Keck and his studio, and a collection of 1003 glass plate negatives, primarily of Keck's artwork, which document the wide range of work he produced throughout his prolific career.

The papers of the painter, photographer, printmaker, and teacher Joseph Kaplan measure 4.5 linear feet and date from 1915-1977. The bulk of the collection consists of printed material, specifically exhibition catalogs. Also found are a large number of photographs taken of and by Kaplan. The papers also include biographical material, correspondence, personal business records, and artwork.

The papers of architect Albert Kahn date from 1875-1970, bulk 1875-1945, and measure 7.02 linear feet. Found within the papers is biographical material, correspondence, personal business records, nine sketchbooks, art work, notes and writings, two scrapbooks, printed material, photographs and photograph albums, artifacts, and motion picture film.

The Jamison Thomas Gallery records measure 27.2 linear feet and 0.001 Gb and date from 1940-2000, with the bulk of the records dating from 1980-1995, reflecting the years the Gallery operated in Portland Oregon. About 1/2 of the records consist of artists' files of artists represented by the gallery and artists of interest. Also found are administrative records, client and collector files, financial and legal records, exhibition files, and publicity files.