Architectural drawings for projects designed by Vegezzi, and drawings made by Vegezzi while he worked as a draftsman in the offices of Kenneth Franzheim and Allan B. Mills, Associate Arch.; Holabird and Root and Burgee; Benjamin Wistar Morris III; Rosenthal, Dessesls and Jones; Trylon Studios; and particularly McKim, Mead & White (81 drawings, 1923-1942).

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.

Collection consists primarily of White's letterpress books and correspondence, with some related bills, receipts, and other ephemera, 1887-1906, relating to his professional and personal matters. Correspondence, 1907, relates to his estate. Correspondents of note include William A. Boring, Richard Morris Hunt, Augustus Saint-Gaudens, Louis C. Tiffany, John La Farge, Charles McKim, Frederick Law Olmsted, Whitney Warren, Stefano Bardini, Bessie White, William Merritt Chase, William Robert Ware, Kenyon Cox, Cornelius Vanderbilt, Percy Baker, Cass Gilbert, Childe Hassam, John Singer Sargent, John Wanamaker, Carrère & Hastings, Thomas Dewing, James McNeill Whistler, Lawrence White, Richard White, and other architects, artists, contractors, suppliers, clients, friends, and family members. One letter book contains letters, 1922, by White's son Lawrence Grant White. Also included are White's architectural drawings for houses he built for himself at St. James, Long Island, 1892-1904, and 121 East 21st Street, New York, undated; miscellaneous drawings; and a few architectural drawings by Lawrence Grant White, and drafts of his translation of Dante's DIVINE COMEDY.