Helbros Watch Company, 1943

“Paul Rand (born Peretz Rosenbaum, August 15, 1914 — November 26, 1996) was an American graphic designer best known for his corporate logo designs, including the logos for IBM, UPS, Enron, Westinghouse, ABC, and Steve Jobs’ NeXT. He was one of the originators of the Swiss Style of graphic design. Rand was educated at the Pratt Institute (1929–1932), Parsons The New School for Design (1932–33), and the Art Students League (1933–1934). From 1956 to 1969, and beginning again in 1974, Rand taught design at Yale University in New Haven, Connecticut. Rand was inducted into the New York Art Directors Club Hall of Fame in 1972.” via stocklogos.com

Looking for more? Link to this 1993 interview of Steve Jobs discussing his work with Paul Rand.