This collection primarily contains architectural drawings, photographs, business records and reference materials related to the projects and designs of architectural and engineering firm Abbott, Merkt and Company. A subsidiary portion of the collection includes drawings, photographs and papers related to the life and career of Richard H. Tatlow, III, president of Abbott Merkt, as well as the firms and agencies for which he also worked.

Alexander McMillan Welch (1869-1943) was a New York City based architect who practiced independently and as a member of Welch, Smith & Provot. His firm was best known for designing New York City townhouses in the Beaux-Arts style. The collection includes 1,641 architectural drawings, 196 student drawings, 14 student notebooks, 99 loose photographs and 3 photo albums of project photography, project specifications and files, and some professional ephemera.

Architectural plans and renderings of Welch's designs, largely New York City residences, circa 1890s-1920s; specifications; photographs; and brochures advertising buildings at 787 Fifth Ave., 628 Fifth Ave., and 71 and 73 Murray Street, in New York City. Drawings and a sketchbook done by Welch while a student; fourteen notebooks containing Welch's notes from Columbia classes in architecture, 1888-1890; licenses to practice in New York and New Jersey, 1904-1923; a certificate, 1937, and related correspondence relating to Welch's appointment as a U.S. delegate to the fourteenth International Congress of Architects, held in Paris, July 18-25, 1937. A list of U.S. delegates is included. Of note are drawings and papers for the restoration of the Dyckman House, an 18th century farmhouse in upper Manhattan (1910-1917); and the Mrs. Rutherford Stuyvesant Estate in Allamuchy, New Jersey, and the Rutherford Stuyvesant Momument in Tranquility Cemetery, Tranquility, New Jersey, designed by sculptor Daniel Chester French.

This collection contains architectural drawings, photographs, business records and reference materials related to the projects and designs of Bertram Grosvenor Goodhue and his successor firm, Mayers, Murray & Philips, primarily in the New York City region. A large portion of the collection consists of personal and professional correspondence to and from Goodhue from the early 1900s until his death in 1926. Relatively few architectural drawings from his professional practice survive.

Architectural drawings and photographs of architectural drawings with some related correspondence of residential and public buildings, churches, libraries, theaters, monuments, and bridges including: the Henry Hudson Bridge, Triborough Bridge, and the Manhattan Bridge in New York; Edward Henry Harriman's Arden House in Harriman, N.Y.; the Alfred I. Dupont mansion in Roslyn, N.Y.; the David A. Reed house in Washington, D.C.; the reconstruction of the Grand Army Plaza in New York City; the Memorial Amphitheater for Arlington National Cemetery; and various bicentennial buildings for Yale University. Of note are drawings of the grounds, details of buildings, and furniture for the New York Public Library, 1908-1909.

This collection contains architectural drawings by various delineators and photographs of completed buildings designed by Charles Coolidge Haight. These projects include General Theological Seminary; the School of Mines at Columbia University; Christ Church, built in 1860; St. Ignatius Chapel, built in 1902; and Trinity School--all in New York City. Also included are the Chapel of Saint Cornelius the Centurion on Governors Island, New York; buildings at Yale University; and miscellaneous and unidentified projects. Additionally found in the collection are a contract and specifications from 1881 for a hospital for contagious diseases to be built for the New York City Health Department on North Brother Island in New York City, as well as reproductions of architectural drawings for this hospital.

Architectural drawings with miscellaneous photographs, prints, and reproductions executed by Charles Stoughton, or by the architectural firm Stoughton & Stoughton, formed by the partnership of Charles and Arthur Stoughton. Projects include bridge designs for the estates of John D. Rockefeller, Jr. at Mount Desert Island, Maine, 1930-1934, and Pocantico Hills, Tarrytown, N.Y., 1929-1931; buildings at the Canton Christian College at Hong Lok, Canton, China, 1905-1913; a residence for secretaries, Young Women's Christian Association, Pak Hok Tong, Canton, China, 1915; and buildings at the Polytechnic Institute at San German, Puerto Rico, 1918-1937. Also, a plan and elevations of the grounds, with the location of the house, of the Jumel Mansion, New York, n.d.; a general plan of a hospital, 1919; a photograph of the Soldiers and Sailors Monument, New York; and miscellaneous maps of various sections of New York City, undated except for one dated 1796.

Price's renderings, circa 1930s until his death in 1962, of designs by Warren and Wetmore, Benjamin Wistar Morris, III, and others; for the Hartford National Bank, Hartford, Conn. and the General Motors Building, New York City, designed by Shreve & Lamb; and other buildings. Also, eight photographs, undated, circa 1930s-1940s, showing the interior and exterior of Union Square Station, Toronto, Ontario (Price's relation to these is unclear).

Photographs and architectural drawings of Lienau's work, much of it in New York City and in New Jersey. Projects include the Gardner A. Sage Library for the General Theological Seminary in New Brunswick, N.J.; the Francis Cottenet Villa in Dobbs Ferry, N.Y.; a house for Legrand Lockwood in South Norwalk, Conn., later owned by Mark Twain and now known as the Lockwood-Mathews Mansion; and the Telfair Academy of Arts and Sciences in Savannah, Ga. Also included are drawings of unidentified or unexecuted buildings; student drawings, and early European commissions; lecture notes, 1835-1837, from the Stadtische Gewerbeschule, Berlin; a partial list of of Lienau's work, 1848-1886; specifications; acounts; printed material; photographs, postcards, and prints showing various European buildings; clippings; certificates; typescripts of articles; and correspondence.

This collection primarily contains architectural drawings, correspondence, business records, and a small number of photographs related to the projects of Emery Roth & Sons and its subsidiary entities. A large portion of the entities are represented only in the Office Records series and are identified as such. Some projects on which Emery Roth & Sons acted as architect of record are not represented in this collection, most notably the Twin Towers of the World Trade Center.