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.
Eric W. Gritsch
Gritsch was raised in a Lutheran pastor's family in Bernstein im Burgenland in Austria. His family was deeply affected by the "Anschluss" and the Second World War. His father died on a death march as a Russian prisoner of war, but Gritsch himself, who had been drafted into a Werwolf group, escaped capture by posing as a gypsy boy. He returned to Bernstein and graduated with Matura in 1950. The same year, he matriculated at the University of Vienna to study Protestant theology. In 1954 he received a Fulbright scholarship and came to Yale University for the academic year 1954/55. After going back to Austria to complete his ministerial training, he immigrated to the United States in 1957, initially for doctoral studies with Roland H. Bainton. His thesis was on Thomas Müntzer, the radical reformer.