Correspondence re Duffield's appointment as secretary of Section A, documents re relevant regulations; correspondence re organization of and participants in Section A, includes A. W. Porter, H. H. Turner, T. Thorp, A. L. Cortie, A. D. Crommelin, J. M. Baldwin, A. Fowler, H. F. Newall, D. Gill, F. W. Dyson, H. Grubb; list of members and associates of the British Association; press cutting; pamphlets re meeting, 1908.

Pages removed from small note book, containing diverse notes: e. g. physical equations, relative alues for poker hands, list of committee for Australian Solar Physics Observatory, etc., [1908-1912].

Correspondence re the eclipse, the committee, and organization for observation of it: from J. M. Baldwin, P. Baracchi, G. F. Dodwell, F. McClean, E. H. Hills, Professor J. A. Pollock, A. Riccò, G. H. Knibbs, Duffield's notes on arrangements, and drafts of letters, 1909.

Letters to Duffield re papers and publication thereof, from John Golding, C. Phillips, J. H. Gardiner (editor of Roentgen Society's Journal), W. D. Butcher (editor of Archives of the Roentgen Ray, 1912-1914.

Brief note of thanks for having sent congratulations upon the Braggs' winning of the Nobel Prize, 20 November 1915.

Letters from a variety of scientists, mainly requesting reprints of articles by Duffield, some correspondence with editors: correspondents include A. Schuster, J. H. Jeans, C. E. St. John, 1916-1920.

Letters re lectures, book and articles, 1916-1924.

Contents of small pad of paper, on which is a draft or notes for an article reporting a series of experiments on pressure on the poles of a burning electric arc, after 1919 (?).

Copy of the constitution, late 1920's.

Handwritten report of the meeting, not wholly legible; author's name faded, but appears to be holder of Duffield Exhibition (Refer 5/18 for details on latter), September 1927.