PHD: 'Specimens of the work of spiral and oval drawing machine'
Marshall's Geological Diagrams
Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"
Scrap book relating to Cornish tin mines
Bound manuscript volume entitled: "Diary of a Week in North Wales By Henry Sharrock"
Three letters from Robert Stephenson to Captain Constantine Moorsom
Volumes entitled: "The natural history of British shells including figures and descriptions of all the species hitherto discover'd in Great Britain systematically arranged ('in the Linnean manner')"
Melksham Turnpike Trust
Archives relating to Engines used by Thomas Redfern
Volume entitled: "Arrete du Ministre des Travaux Publics portant reglement pour l'Ecole Nationale des Mines, Paris"
Catalogue of Useful Inventions for Cotton Spinners, Manufacturers and for all textile trades
Division. Sheet 9 of 15.
An edition of 'The Photogram' journal vol. 2 no. 17
Letter from Thomas Christy to Henry Pease
Railway Signal Volume 3 (1885)
General plan of the Analytical Engine, half size.
Draft notation of the Difference Engine No. 2
Notes and observations on ores and compounds
Plan of left half of middle group for General Plan 28.
Sign apparatus for Plan 28a. Plan, elevation.
Small planing machine. Sheet 1.
Plan of mill, table wheels and carriage. Sheet 31.
Drawing entitled 'Sectional Drawing for a Steel Protected Cruiser for Colonial Defence to be named'
Notation of the Analytical Engine
Drawing entitled 'Sheer Drawing for a Steel Protected Crusier for Colonial Defence to be named'
Algebraic addition. Sheet 1 of 2.
Catalogue of the drawings of the New Analytical Engine.
Difference Engine index of parts.
Plan of operation and variable card counting apparatus. Suited to Plans 28 and 28a.
![Untitled. [Vertical positions of some of the wheels of Plan 28a. Notation 348 and 331 cycles]. Sheet 12 of 13.](https://coimages.sciencemuseumgroup.org.uk/221/221/large_thumbnail_bab_f_352_12_0001_vertical_positions_of_some_of_the_wheels_of_plan_28a_1845_oct.jpg)
Untitled. [Vertical positions of some of the wheels of Plan 28a. Notation 348 and 331 cycles]. Sheet 12 of 13.
Skeleton of vertical motions for all operations. Right groups. Multiplication and division from 372 Sheet 1. Sheet 1 of 3.
Index of Difference Engine No. 2.
![Drawing of Tender for the Magnet Loco Engine, No. 108 Two end sections showing wheels, axle boxes and brake arrangement, [presumably for new tender-patent drawing]](https://coimages.sciencemuseumgroup.org.uk/83/229/large_thumbnail_19124_3.jpg)
Drawing of Tender for the Magnet Loco Engine, No. 108 Two end sections showing wheels, axle boxes and brake arrangement, [presumably for new tender-patent drawing]
Mechanical notation
Sketches of the printing and stereotyping apparatus of the Analytical and Difference Engines. Superseded. Plan, elevation.
Algebraic addition of i k figures. Sheet 4 of 8.
History.
Notation of periods for the centre group.
Plan and elevation of sundry parts in the upper cages of left half of middle group.
Division. Sheet 5 of 15.
Verticals for one barrel of 278 verticals to perform division with General Plan 28. Sheet 1 of 3.
Genealogy of multiplication. One barrel. Sheet 2 of 2.
Verticals for one barrel to perform algebraic addition of k figures with General Plan 28. Sheet 2 of 2.
Printing. Analytical and Difference Engine.
An edition of 'The Photogram' journal vol. 5 no. 50
Cross-written letter from Kate Brewsher, Albion House to Jane Young (nee Hackworth)
Store variable selectors. Superseding drawing No 2.
Motions of the stereotype frames
