Sperry-Rand Building, September 11, 1963.

Designed by the firm of Emery Roth & Sons, the massive Sperry-Rand Building, completed in 1963, stand 43-stories high and includes two million square feet of space. In the 1970s the Sperry Corporation, which had been founded in Brooklyn in 1910 to manufacture navigation equipment, sold typewriters, office equipment, electronic digital computers for business and the military, farm and aviation equipment, and consumer products like razors. These items were each produced under their own separate businesses but they formed the Sperry conglomerate.