Alan Burnham (1913–1984) was an American architect and architectural historian who served as the Executive Director of the New York City Landmarks Preservation Commission from 1965 to 1973 as well as the Commission's Director of Research. This collection consists mainly of reference materials related to architectural history and New York City architectural history, as well as professional papers and papers relating to Richard Morris Hunt and the history of New York City apartment buildings.

Architectural historian Sarah Bradford Landau is a scholar, advocate, and public servant in New York City, active from the late 1970s into the second decade of the 21st century. Landau's research includes a focus on the architecture of William Appleton Potter and Edward Tuckerman Potter (on whom she wrote her dissertation), the gothic revival (especially its influence on American church architecture), and the skyscraper. The bulk of the collection is made up of research and lecture files. Additionally, the collection includes a number of personal effects, including portraits of Landau as well as her ephemera files, which include clippings, correspondence, and other mementos from the colorful and celebrated career of a public intellectual beloved in many circles in New York City and beyond.

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.

The Woodlawn Cemetery archive documents the history of the grounds, mausolea, monuments, and operations of Woodlawn Cemetery, founded in 1863 in The Bronx, New York, and one of the largest in the United States. The collection includes architectural designs records, maps, photographs, correspondence, construction and maintenance records, and other historical documents, spanning 140 years of the cemetery's operations.