This small collection contains primarily Detwiller's student drawings, notes, course materials, books, class photographs, and graduation announcements from the period of his study at Columbia University from 1881 to 1885. These materials are supplemented by a small group of Detwiller's childhood sketchbooks, drawings and office papers created by Detwiller during his practice as a professional architect, and other scrapbooks and ephemeral items relating to Detwiller's family and personal interests, spanning the years 1874 to 1940.

Ernest Flagg was an American architect in the Beaux-Arts style. The collection is made up of diaries, correspondence, photographs, project records, Flagg's writings, and clippings.

Gordon Bunshaft (1909-1990) was an American architect who, as a partner at Skidmore, Owings & Merrill, had a significant impact on large-scale corporate architecture. His projects include such significant urban office towers as the Lever House in midtown Manhattan, as well as modern office campuses set in natural landscapes, including such examples as the American Can Company in Greenwich, Connecticut or the Connecticut General Life Insurance Company headquarters in Bloomfield, Connecticut. Additionally, his interest in art caused him to actively integrate work by well-known modern artists into the public plazas and interiors of SOM's projects. The professional aspects of this collection can be found in clippings, project photography, oral history records, and publications, however, the majority of the collection is personal and reflects the life of Gordon and his wife Nina Bunshaft. Through correspondence, snapshots, objects, and personal papers the collection focuses on the Bunshafts' friends, their travels, and their impressive art collection of both modern and ancient sculptures and paintings.

This collection is made up of architectural drawings, correspondence, specifications, contracts, invoices, minutes, financial statements, patents, advertisements, photographs, photograph album, test results and reports, memoranda, tile samples, factory order cards, and other materials pertaining to The Guastavino Fireproof Construction Company's projects. The dates of the materials span 1866-1985, with bulk dates 1890-1942. The architectural records include structural, decorative, and acoustical sample products and fragments. Also included are materials added to the files by George Collins (1917-1993), Professor of Art History at Columbia University. Prof. Collins secured the donation of this archive in 1963, and remained its custodian until it was transferred to the Drawings and Archives Collection at the Avery Architectural and Fine Arts Library in 1988. The records document Prof. Collins' research efforts, as well as the Company's projects in forty states (including District of Columbia), four Canadian provinces, and eleven other foreign countries.

This collection includes one drawing, ink and wash on paper, of the Soldiers' and Sailors' Memorial; a drawing in ink and wash on paper of the Trenton War Memorial; and 17 drawings, graphite on tracing paper, of the Kemble Building, located at 15-25 Whitehall Street in Manhattan. Eight boxes of office records that include correspondence concerning buildings for the Goelet Estate, Cadillac Hotel, and Grant's Tomb, and a postcard to architectural renderer Hughson Hawley. Also included is a diary and an album of family photographs and architectural projects.

John Maclane Johansen received his architecture degree from the Harvard Graduate School of Design in 1942 where he studied under Walter Gropius. He worked under Marcel Breuer and at Skidmore, Owings & Merrill before opening his own private office in New Canaan, Connecticut, where he became known as one of the Harvard Five. He later formed a partnership with Ashok Bhavnani. Major projects include the Oklahoma (Mummers) Theater in Oklahoma City; the Goddard Library at Clark University in Worcester, Massachusetts; the Charles Center Theater Building (Mechanic Theater) in Baltimore, the United States Embassy in Dublin, Ireland, and the Island House and Rivercross apartments on Roosevelt Island, which he completed with Bhavnani. Johansen also designed numerous private residences in Connecticut and New York, and a series of conceptual projects such as the Leapfrog City project and the "Moon Module" house. The collection largely documents Johansen's professional career, and includes original and reprographic architectural drawings, photographs, negatives, professional papers, publications, reference files, and one scale model.

Leopold Arnaud was a member of the Columbia University's School of Architecture faculty for 31 years and dean from 1937 to 1960. The collection consist of architectural drawings, correspondence, student photographs, student sketchbooks and papers documenting the 1944-1945 Architectural Competition for Permanent Building Construction at the United States Military Academy at West Point, New York.

Max Gordon (1931-1990) was an internationally renowned architect who specialized in the design of galleries and exhibition spaces for modern and contemporary art. The collection is composed primarily of project files, architectural drawings, photographs, correspondence, legal papers, personal diaries, and student sketchbooks.

The material spans the years 1948 to 1958 and documents Paton Price's relationship with Frank Lloyd Wright through the course of planning the New Theater to be located in Hartford, CT. The collection consists of letters, telegrams, publicity material, photographs, and a perspective view of the Theater signed by Wright.