G. Källén makes some comments about remarks on calculations he made.

Lorentz transformations, time inversion.

Letter from [?] to W. Pauli linked to the publication of "The theory of relativity". Problems with copyright.

Touschek answers a letter from Pauli, who had made some comments on a calculation.

Touschek answers a letter from Pauli, who had made some comments on a calculation.

Short letter about particles and antiparticles.

Letter from Editore Boringhieri to W. Pauli linked to the publication of "The theory of relativity".

Letter from Teubner Verlagsgesellschaft (Heisig) to W. Pauli. Related to the republication of "The theory of relativity".

Letter from Teubner Verlagsgesellschaft (Heisig) to W. Pauli. Related to the republication of "The theory of relativity".