found: New York (N.Y.). Landmarks Preservation Commission. Former Helen Miller Gould stable, 1989:p. 1 (York & Sawyer)
found: A treasury of World's Fair art & architecture WWW site, Jan. 11, 2008:New York World's Fair, 1939-1940 (United States Steel Building [postcard recto]; architects, York and Sawyer [postcard verso])
found: Withey, 1956:p. 675 (York & Sawyer; founded 1898)
found: Zim, L. The world of tomorrow, the 1939 New York World's Fair,1998:p. 76 (United States Steel; blue stainless steel building designed by the architectural firm of York & Sawyer)
found: Wikipedia, viewed on September 3, 2013(The architectural firm of York and Sawyer produced many outstanding structures, exemplary of Beaux-Arts architecture. In 1898, they established their independent firm, based in New York City)