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"World Building". The Skyscraper Museum. Archived from the original on June 12, 2020. Retrieved September 28, 2020.
"The New World Building". The Real Estate Record: Real Estate Record and Builders' Guide. 45 (1161): 879. June 14, 1890. Archived from the original on March 31, 2022. Retrieved September 28, 2020 – via columbia.edu.
"Telegraphic Briefs". Western Herald. February 20, 1907. p. 6. Archived from the original on April 24, 2022. Retrieved September 28, 2020 – via newspapers.com open access.
"A New 'World' Building". New York Evening World. April 11, 1888. p. 2. Archived from the original on April 24, 2022. Retrieved September 25, 2020 – via newspapers.com open access.
"World Building". The Skyscraper Museum. Archived from the original on June 12, 2020. Retrieved September 28, 2020.
McKinley, Jesse (November 5, 1995). "F.y.i.". The New York Times. ISSN0362-4331. Archived from the original on March 28, 2019. Retrieved October 5, 2020.
McKinley, Jesse (November 5, 1995). "F.y.i.". The New York Times. ISSN0362-4331. Archived from the original on March 28, 2019. Retrieved October 5, 2020.