William S. Heckscher
In 1932–1933, Heckscher lived in New York where he worked as Panofsky's assistant. During this time, he enrolled in the Graduate Department of Art History at the Institute of Fine Arts at New York University to study American art history. Heckscher returned to Germany to continue his studies in 1934. He and his mother were detained by the Gestapo and interrogated for ten days after being accused of having pacifist connections.
Eli Heckscher
According to a bibliography published in 1950, Heckscher had, as of the previous year, published 1148 books and articles, among which may be mentioned his study of Mercantilism, which had been translated into several languages, and a monumental Economic history of Sweden in several volumes. Heckscher is best known for a model explaining patterns in international trade (Heckscher-Ohlin model) that he developed with Bertil Ohlin at the Stockholm School of Economics.