Architectural drawings and photographs of Litchfield's designs for Yorkship village (housing for ship workers during World War I near Camden, N.J.); Public Library, St. Paul, Minn.; memorial to Theodore Roosevelt at Oyster Bay, Long Island, N.Y.; 800 Park Avenue and other New York City apartment houses; Albany Post Office, Albany, N.Y. (designed by Gander, Gander & Gander, with Litchfield as consulting architect); and other projects.

This small collection contains primarily correspondence, itineraries, and papers related to Fitch's publications, travel, and the administration of Columbia University's Historic Preservation program. There are copies and drafts of several articles and reports generated for various organizations authored by Fitch and others (all reports are noted in italics in the spreadsheet). Also included is the unfinished manuscript of Fitch's final book project on American architecture. Of particular note among the reference materials are fifty-two photographs of Richard Neutra's VDL Research House in Los Angeles, some taken by architectural photographer Julius Shulman.

This collections contains the professional research, writing, publications, and correspondence produced and collected by Rattner through her study of the architect James Renwick, Jr. The bulk of Rattner's research addresses the life and works of Renwick, but other research topics represented in her papers range from the Renwick family genealogy to the institutional architecture of New York City. Types of research material include personal research notes (in notecard format, both typed and holograph), correspondence (1963-2001), newspaper and magazine clippings, Xerox copies of archival material and secondary sources, transcribed articles and correspondence, brochures from historic sites, photographs and slides of buildings and sites, sketches, historic structure inventory forms, landmark nomination forms, landmark designation reports, and postcards.

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.

The bulk of this collection consists of more than 22,000 black and white photographic negatives and more than 10,600 black and white photographic prints documenting commercial, institutional, religious, and residential architecture throughout the United States, with particular emphasis on sites in the mid-Atlantic region. These images date from the mid-1930s to Molitor's retirement in the mid-1980s, with the great majority of images created between 1946 and 1980. Also included in the collection are images of landscapes, industrial design, portraits, and events of personal significance to Molitor. In some select cases, color prints, color negatives, color transparencies, and 35mm slides are also available in addition to or instead of the black and white negatives and prints. Researchers are also advised that documents in this collection indicate that when faced with a lack of storage space in 1973, Molitor contacted clients to return inactive negatives that they had comissioned before 1955. In at least some cases, those clients declined to accept their negatives and Molitor subsequently destroyed the images. Thus, this collection has lacunae in the negatives series.

This collection contains professional and personal writings, published papers, correspondence, photographs, architectural records, student work, and research materials related to the academic and architectural practice of Talbot Faulkner Hamlin.