Gunvald Aus
Gunvald Aus, also written Aas was a NorwegianAmerican engineer. He is most associated with the engineering of the Woolworth Building in New York City.
He was born the son of Gabriel Godfrey Aas and Sophie Schroeder in Haugesund in the county of Rogaland, Norway. He was educated at the Bergen Technical School . He graduated from the Technical University of Munich . He was then hired in the Norwegian Directorate of Public Roads as an assistant to Road Director Hans Hagerup Krag, but left for the United States in 1883. Initially, he was employed by railroad and highway bridge designer Theodore Cooper.
Source: Wikipedia