Folder of miscellaneous material, including a plan for a projected book Introduction to Programming, which was to include discussion of important advances made by projects undertaken during Strachey's period at the National Research Development Corporation (St. Lawrence Seaway, Flutter, Logical Design, Autocode, etc.).

Bundles of notes and calculations, perhaps for Manchester Computer, or for Elliott 401 at Cambridge, as follows: 'Runge Kutta. Gill' [Stanley Gill] 'Determining Equations' 'Special case A' '4th order Complete solution' '5th order (incomplete)' Also includes a letter from D.B. Gillies.

Two bundles of notes on asymptotic expansions.

Two bundles of notes, and extensive loose pages of calculations.

Folder marked: 'L-R 'Q-R'

Calculations, routines and printouts (some pages dated May 1958). Five bundles.

Printout of a program for codiagonal matrix; this is written in ALGOL, probably 1960, and may not be Strachey's work.

Three bundles of calculations.

Eight bundles of calculations and loose pages.

Miscellaneous manuscript drafts for paper with this title, perhaps early form of that later published with J.G.F. Francis, Computer Journal, 4. Includes drafts for 'Preliminaries', 'Special Codiagonal Forms', 'Derivation Form', 'Matrix interpretation of analogue of Bairstow process for Codiagonal form', 'Real roots of an unsymmetric matrix', and a heavily corrected typed version. Folder includes 8-page manuscript note in another hand 'On the…

Miscellaneous bundles of notes and calculations on work of Schwarz, Lanczos, and other problems of Codiagonals, Tridiagonals, Polynomials, etc.

Material related to MS. Eng. misc. b. 265/C.112.

Five bundles of miscellaneous mathematical calculations on transformations, etc., n.d. but using Pegasus.