NY Daily News. Retrieved November 13, 2016. ↑ Focus on Fabrication - Rigidized Metals Archived February 26, 2014, at the Wayback Machine., The Architect's Newspaper 5.17.13 ↑ "Unisphere: Built by US Steel as the symbol of the 1964-5 New York World's Fair", Place Matters, February 5, 2010, accessed January 11, 2011 ↑ http://www.nyc.gov/html/lpc/downloads/pdf/reports/unisphere.pdf ↑ Short, Daniel (2016).