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.
Jeff Hirshfield
Hirshfield was born in New York City. He studied under Ed Soph. He worked for the Joffrey Ballet in 1976-77 and then played with Mose Allison (1977–79). During the 1980s he worked with Red Rodney and Ira Sullivan (1981–85), Toshiko Akiyoshi (1986-89), and Bennie Wallace (1987–90). Alongside Fred Hersch and Steve LaSpina, he was a member of the trio "Etc." during 1988-91. During this time he also played in a trio with Hersch and Michael Formanek. From 1990 he played with Harold Danko, played in Formanek's Wide Open Spaces project, and played again with LaSpina in a quartet setting. He also worked in a quartet with John Abercrombie and Andy LaVerne early in the 1990s. In the mid-1990s he played in a trio with Marc Copland and Dieter Ilg (1992–95), another trio with Tim Berne and Formanek (1993–94), and the Lan Xang ensemble with David Binney, Donny McCaslin, and Scott Colley (after 1995).