NOTES
In these notes I have not attempted to annotate every scrap of information in the text. Details of the participants’ lives and works come generally from the works cited in the bibliography, the Dictionary of Scientific Biography edited by C. C. Gillispie being the default reference for lesser characters. For my understanding of the emergence of quantum theory, I relied heavily on the three books by Abraham Pais cited in the bibliography. Cassidy’s biography of Heisenberg and Dresden’s of Kramers were also useful, as was the lengthy introduction by van der Waerden to his compilation of important papers. The multivolume history by Mehra and Rechenberg I made less use of, only because it goes into far more technical detail than I needed for my telling of the story. The AHQP interviews are the invaluable oral histories recorded as part of the Archives for the History of Quantum Physics, a joint project,