Thirring corrects a mathematical error in his letter of the 31st March [1955]. He applies Thirring's model to Maxwell's case and discusses an alternate model.

Thirring writes about the critics of the Russian physicists about the paper by Hüda and Machida .

Thirring gives the results of his calculations in connection with Lee's model (convergence of a perturbation series).

Thirring sends the continuation of his work on electrodynamics.

Thirring discusses papers on renormalization by Klein, McCormick and by Cooper.

This letter is a continuation of Thirring's letter of the 8th July 1957 on identical particles.

Theis writes about his calculations as regards the form factor theory.

Takasu sends corrections and remarks concerning a reprint on geometrical representations of relativity theory.

Symanzik replies to two points raised by Pauli : 1) The selection rule, 2) The isotope problem.

Symanzik makes a comparison between his calculations and those of Källén.