Eli Heckscher
Heckscher was born in Stockholm, son of the Jewish Danish-born businessman Isidor Heckscher and his spouse Rosa Meyer, and completed his secondary education there in 1897. He studied at Uppsala University and Gothenburg University, completing his PhD in Uppsala in 1907. He was professor of Political economy and Statistics at the Stockholm School of Economics from 1909 until 1919, when he exchanged that chair for a research professorship in economic history, finally retiring as emeritus professor in 1945. In 1929 Heckscher founded the Institute for Economic History Research.
Ernest Julius Wilczynski
Born in Hamburg, Germany, Wilczynski's family emigrated to America and settled in Chicago, Illinois when he was very young. He attended public school in the US but went to college in Germany and received his PhD from the University of Berlin in 1897. He taught at the University of California until 1907, the University of Illinois from 1907 to 1910, and the University of Chicago from 1910 until illness forced his absence from the classroom in 1923. His doctoral students include Archibald Henderson, Ernest Preston Lane, Pauline Sperry, Ellis Stouffer, and Charles Thompson Sullivan.