Yoshiki Waterhouse, who worked at Vignelli's firm, says the designer had been ill and died today at his Manhattan home.
The Italian-born Vignelli worked on a variety of projects throughout his career. They include the original branding for American Airlines as well as a version of the New York City subway map that came out in 1972. That subway map design was in use until 1979.
Waterhouse says Vignelli believed a good designer should be able to design anything, from small items like cutlery to big urban design projects.
