PD2431 28 East 70th Street, New York (N.Y.), United States: An empty folder cross referencing PD 2431 and PD 2989., no date

PD2431 28 East 70th Street, New York (N.Y.), United States: An empty folder cross referencing PD 2431 and PD 2989., no date, Box: 33; Folder: N/A. Council on Tall Buildings and Urban Habitat Records, SC MS 0263. Lehigh University Grant Projects. https://archivesspace.lib.lehigh.edu//repositories/7/archival_objects/61734 Accessed May 20, 2026.