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Part of a manuscript by Heisenberg. See also 1/581.

Notes, probably on Heisenberg's manuscript "2) Boseteilchen der Ruhmasse Null".

Comments on calculations and observations made by Källèn on Heisenberg's theory of Hilbert-space I and II.

Calculations.

Notes and calculations on an article by Heisenberg: "Lee Model and Quantisation of non-linear field equations", Nucl. Phys 4, 532, 1957.

Some mathematical corrections to a manuscript from Gürsey.

The fundamental field as a 4x4 matrix.

Stapp wrote to request some clarifications on the spinor model (roof operators, degeneracy of the vacuum and isotopic spin dependences).

Second edition of this manuscript. In conclusion: "Quite generally the present paper is meant rather as a program than a report on what is hoped to become a unified quantum field theory."

Calculations on $\Psi,\widehat{\Psi}$.