Contents of folders so inscribed, comprising correspondence, notes and drafts.

This was a major topic on which Peierls thought, wrote and lectured widely. It was also the subject of extensive correspondence conducted in some cases over several years. Peierls kept exchanges with his principal correspondents stapled or clipped together in individual bundles which may include related letters or material from others; these have been retained in his order.

Peierls's own notes and drafts are presented separately at MS. 11619/21/B.37-39.

Peierls's principal publications on the topic, some collaborative, are: