Jahn, Helmut(1940– ) architect; born in Nuremberg, Germany. He emigrated in 1966 and joined C. F. Murphy Associates, Chicago (1967–81) (which became Murphy/Jahn in 1981), designing primarily midwestern commercial buildings, making extensive use of glass sheathing.
German-born American architect; joined the firm of C.F. Murphy in Chicago, in 1967. Studied with Mies van der Rohe, but his later work moved to a new richness of expression drawing on aspects of Art Deco for a unique expression. In Chicago, he designed O’Hare International Airport (1965); the Exhibition Building at McComick Place (1971); Xerox Center (1980), and the State of Illinois Center (1985). He began incorporating High-Tech and Art Deco inspired elements in his later high-rise office structures, such as 750 Lexington Avenue, New York (1989), and Messe Tower, Frankfurt, Germany (1991).