Relating to momentum.

Single-photon experiment.

Research results on 'spin'.

Relating to Egon Bretscher and authorship of a 1940 report on plutonium. Includes copies of letters and notes, 1940 and 1946.

Brown came to work with Peierls in Birmingham in 1949 and became a lifelong friend. He lodged with the Peierls and was married from their house (Bird of Passage, pp. 231-232). Comprises personal and scientific correspondence, including letters to Genia Peierls.

Burt was a student of Peierls at Oxford, working and publishing with him on momentum. He later worked at the Cavendish Laboratory Cambridge and for British Telecom. See Bird of Passage, p. 305. Relates to research, publications, career. Includes five pages of undated manuscript notes by Peierls.

Butler was a research student at Birmingham, later Professor at the University of Sydney when Peierls visited in 1974. He died in 1982. See Bird of Passage, passim. Letter 1966 is from Butler; correspondence 1982 is on memorial volume; later correspondence is with Butler's widow Miriam.

Byers came to Birmingham as a research fellow in 1956, later returning to Los Angeles where Peierls often visited. See Bird of Passage, p. 240. Scientific and personal correspondence, including a helpful letter of advice from Genia Peierls on Byers's notoriously disorganised way of life, 17 Oct 1982.

Correspondence on resonance scattering, 1980, and memoir of H. Fröhlich, 1991.

The 'Herbert Experiment' on photons, and 'Copenhagen Interpretation' of quantum mechanics.

Dalitz joined Peierls at Birmingham in 1949 and soon became one of his closest friends and colleagues. After a period at the Enrico Fermi Institute in Chicago 1956-1963, Dalitz returned to Oxford as a Royal Society Research Professor in 1963. See Bird of Passage, pp. 234, 291. Many of Dalitz's letters are closely written in fine longhand, sometimes in pencil; the year is often omitted from the date and the documents have been assigned from the…

Correspondence from Dalitz in Oxford to Peierls in Seattle and elsewhere, covering a wide range of topics. There is one letter from 1970.

Shorter correspondence covering a wide range of topics.