In this latest volume, Einstein's visible public persona is amply documented in his correspondence and articles. Einstein agrees to help a Zionist fund raising mission and he visits the United States for the first time. While there, he delivers his now famous Princeton Lectures. Correspondence with N. Bohr, W. Bothe, P. Ehrenfest, H. Geiger, H. A. Lorentz, L. Meitner, and A. Sommerfeld records Einstein's interest in and contributions to the emerging modern quantum theory.
Throughout the year, Einstein navigates complex territory in his professional and personal life. He travels with his older son to Bologna, yet turns down repeated invitations to Munich. He supports the nomination of Masaryk for a Nobel Peace Prize, intervenes on behalf of Germany at the Paris reparations conference in Amsterdam, and assists Russian physicists in their efforts to rebuild and develop Russian science.