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.

Architectural drawings and photographs of buildings designed by the firm dating approximately from its founding to the 1950s. Among those represented are buildings at the World's Columbian Exhibition, Chicago, 1893; Pennsylvania Railroad Station, New York, 1906-1910; restoration, 1903, of the White House, Washington, D.C.; buildings at Columbia University's Morningside Heights campus, New York; Boston Public Library, Boston, Mass.; E.W. Morgan mansion; Municipal Building, N.Y.; Col. Elliott Shepherd House, Scarborough, N.Y.; buildings at Amherst College, Amherst, Mass.; Bellevue Hospital, New York; various New York City residences; and others. Also included are competition drawings for the New York Public Library; miscellaneous drawings and sketches; photographs of the partners and of other members of the firm; lists of the firm's work; clippings of articles about the firm; lists of the firm's employees; billing records, 1953-1955; account books, 1940s-1950s; bank books, 1895-1955; award certificates; and other office miscellany.