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Copy letter from Isambard Kingdom Brunel to the Directors of the Great Western Railway

Scottish letters patent granted to Thomas Farmer for obtaining sulphur, sulphurous acid and other products from pyrites

Letters patent granted to Thomas Farmer for 'Improvements in treating Pyrites to obtain Sulphur, Sulphurous Acid and other products'

Letters patent granted to Stephen Geary for 'Improvements in the preparation of fuel'

Sketch books of drawings of fragments recovered from the shipwrecks of the Royal George and the Edgar

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"

Great Western Railway – Drawing No 2 Side elevation and Cross Section

Printed prospectus for the London and Birmingham Railway Hotel and Dormitories, Euston Station

Drawing entitled 'Sectional Drawing for a Steel Protected Cruiser for Colonial Defence to be named'

Elevation of parts of middle group drawn in plan on No. 127.

Visitors pass

Untitled. Draft notes. Sheet two of six.

First edition of 'Bradshaw's Railway Time Table'

Notation of units, multiplication

Difference Engine index of parts.

Digit counting apparatus on the two upper wheel selectors.

Store variable selectors. Superseding drawing No 2.

Motion for carrying the tens, plus and minus.

Long pinions in the position for stepping. Adding wheels and short pinions behind long wheels.

Lifting apparatus by screw. Sheet 9.

Carriage and racks in sections. Sheet 10.

Side and end elevation of feed motion with shade. Second revision.

Sections of framing and racks. Sheet 6.

Side and end elevation of feed motions. Showing the bands in different colours.

Reverse motion for cross planing.

Back and end elevation of cross slide.

Side and end elevations of feed and driving apparatus

Elevation and section of cross slide.

Small planing machine. Sheet 1.

End and side elevation of Large Universal Machine.

Plan, elevation and section of cross slide.

Plan of left half of middle group for General Plan 28.

Plan of Large Universal Machine.

Untitled plan and elevation. Incomplete.

Plan of mill, table wheels and carriage. Sheet 31.

Platform raising apparatus. Sheet 33.

Adding column with motion for changing from plus to minus. Incomplete.

Untitled. A model of six cages was made from this drawing. Incomplete.

Notation for computing the elliptic radius vector by having the eccentricity and the mean anomaly

Reduction of the three equations

The drawings of the New Engine arranged according to the subjects alphabetically. Analytical.

List of designs. Cross reference list, showing numbers of drawings, pages of sketch books and numbers of notations.

Notation of the reduction of the three equations. Successive reductions of three simultaneous equations in three variables to find the value of one variable

My Machine 1888 II Plan of driving cams, levers, etc. in initial position.

My Machine 1889 III Development of driving cams.

Sheet 1. Successive reduction of three simultaneous equations in three variables to find the solution for one variable.

Sheet 2. Successive reduction of five simultaneous equations in five variables to find the solution for one variable.

Temporary staging

Untitled. [Operations for the Analytical Engine]