Pauli writes about the world war and supports Uhlenbeck in these difficult times. He writes that he his invited to Lafayette's summer school.

Pauli congratulates on the birth of his Uhlenbeck's son. He writes about Bhabha's letter on the cascade theory. He writes about a paper by Dirac on quantum electrodynamics (published in: Proc. Roy. Soc.). He writes about the efforts of the authorities to get him back to Switzerland.

Pauli writes about the work done in Berkeley on meson theory. He writes about his lecture on Cosmic rays theory. He writes about Rooseland's report on the Nazi terror in Norway.

Pauli discovers a mistake in Uhlenbeck's calculation of a certain integral.

Pauli apologizes for a mistaken criticism by Fierz on a theory by Uhlenbeck.

Pauli writes about reports on efforts to find new positive particles. He writes about the situation in Switzerland during last winter and about the situation in Holland. He writes about the preparation of the Bohr-Festschrift.

Pauli writes about Uhlenbeck's contribution to the Bohr-Festschrift.

Pauli acknowledges receipt of Uhlenbeck's paper. He writes about the contribution of Dutch colleagues to the Bohr-Festschrift.

Pauli thanks Uhlenbeck for the congratulations on his Nobel prize. He writes about the notes of his MIT lectures.

Pauli writes about Kahn's paper. He hopes that Kahn will come to Zürich. He writes about a reply to Stark's attacks on "dogmatic" physicists.