Stein with CARE packages, which provided food for their families.

Heinz writes that “the physics laboratory at Marburg was at that time an oasis where Hitler's existence was barely noticeable—and all of the physics students were friendly.” (In 1982 Barschall was awarded an honorary degree by Marburg.) However, he realized that he had to leave Germany, but to where? He wrote a childhood friend, Gisbert Ruge, whose family had sent him to Princeton as an undergraduate, for advice and got back a ten-page letter with detailed financial, social, and administrative information. Ruge had done exhaustive research with his principle source of information a fellow undergraduate from Germany then unknown to Heinz, Wolfgang Panofsky.

Panofsky suggested that Barschall also consult Rudolf Ladenburg, a Princeton physics professor. Heinz sought the help of Otto Meyerhof, who had been a professor along with Ladenburg at the Kaiser Wilhelm Institute in Berlin. Contacted by Meyerhof, Ladenburg arranged for Heinz to come to Princeton as a graduate student in the fall of 1937, although Heinz did not then, or ever, have a bachelor's degree.

At Princeton Barschall did his thesis research under Ladenburg, “who was kind and helpful,” but Barschall felt he learned more from Morton Kanner and John Wheeler. Kanner was a fellow graduate student, who Heinz considered a brilliant experimentalist (Kanner died of cancer only a few years later), and Heinz especially valued the theoretical instruction from Wheeler. Wheeler later helped Barschall personally by making arrangements for his parents to come to the United States in 1943 from England, where they had lived since 1939 after leaving Germany. Heinz also spoke of his appreciation for the help he was given by Eugene Wigner and Louis Turner. Faced with a tricky problem of correct-