Architectural drawings for buildings designed by Hamlin including proposed alterations for the Charles Dudley Warner House, circa 1885; pumping station Clear Stream (or Clear Stream Station), Long Island, 1886; American Classical School, Athens, Greece, 1886-1888; proposed cottage for Mrs. R. Hoe at Sea Cliff, Long Island, 1887; an addition to Clinton Hall at Blair Presbyterian Academy, Blairstown, New Jersey, circa 1896; Soldier's Monument, Whitinsville, Massachusetts, circa 1904 (Hamlin was the architect and Herman A. MacNeil was the sculptor); and miscellaneous and unidentified structures. Also included are drawings done by Hamlin while a student at the Massachusetts Institute of Technology, 1876-1877; sketches done by Hamlin on travels both in the United States and abroad, 1867-1923; photographs of various unidentified buildings and architectural drawings; manuscripts of "ARCHITECTURAL SHADES AND SHADOWS" with related drawings"History of American Art" (unfinished, in French), circa 1923, and "MODERN ARCHITECTURE AND THE CRITICS" circa 1923. Personal materials included undated photographs of A.D.F. Hamlin; a photograph of an 1835 portrait of Cyrus Hamlin; a volume containing condolences, 1926, on the occasion of A.D.F. Hamlin's death; and a scrapbook"Memoirs of Amherst, Class of '75" containing programs, invitations, clippings, notes, essays, exam questions, steamship passenger lists, and other materials.

Also, biographical manuscripts, illustrations of coats of arms, pedigree, and lists of his drawings and his library, to circa 1900, much of it done by Joseph B. Davis.

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.

Charles Adam Platt (1861-1933) was an American architect and landscape designer. Although best remembered today for his landscape and country house designs, he was also nationally known for his etchings, landscape paintings, commercial architecture, and institutional projects. He was largely self-taught in each of these disciplines, building his success on his ability to reconceive the classical tradition in architecture for the needs and desires of his wealthy, powerful clients. This collection contains materials related to Platt's personal and professional lives, the bulk originating from Platt's office in the form of project drawings, photographs, and records documenting architectural projects from 1901-1933.

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).