"When it was unveiled in 1952, Gordon Bunshaft's design for Lever House was revolutionary. The Park Avenue office building was the first in New York to use a glass curtain wall—a construction technique that would soon be common throughout Manhattan. "After years of neglect, a full renovation of Lever House began in 1999. To further assert the building's status as a design milestone, architect William Georgis and designer Michael Bierut planned an interior design program based on the building's signature lettering: the words ‘Lever House’ appear twice on the facade, each time in a distinctive (but slightly different) form of sans serif lettering. Based on site photographs of this lettering, as well as a related form of lettering on the building cornerstone, Tobias Frere-Jones and I synthesized a complete typeface, called Lever Sans, now used throughout the landmark building for its signage and wayfinding program." Michael Bierut art director; Michael Bierut/Tracey Cameron, designers; William T. Georgis Architects, project architects; Pentagram Design Inc., design firm; RFR Realty, LLC. client.