Collection of letters to Richard Trevithick, mainly concerning the design and efficiency of steam-engines
Collection of charts depicting the hardware and uses of computing, communication and domestic technology in India
Digital copy of manuscript of the engineer John Urpeth Rastrick, entitled: Common Place Book, produced in Shropshire
Volume entitled: "The length of all the Mastes and yards of his Ma[jesty's] ships and Pinnaces; A proportion of cables and anchors to furnish them to sea; All their standing roapes; Dimentions of their boates; Breadth and depth of their sayles; their burthen, number of men and ordnance."
Skeleton of vertical motions for all operations. Right groups. Multiplication and division from 372 Sheet 1. Sheet 1 of 3.
List of the combinations in division performed as in Notation 290, with the cycles in which they occur. Sheet 1 of 4.
Vertical movements of axes ordered by left barrel for multiplication compiled in part from a genealogical notation. Sheet 3 of 3.