Comprise: /1 notebook recording trials of his steam carriages between Paisley and Glasgow in 1834; 'Calculations of Ships' dated June 1851 and signed B Jensen, including comparative tables re 'America' schooner yacht and Stephenson's 'Titania'.
/2 indexed office register of ships built by Russell from 1848 (ships after 1853 undated) listing over 60 vessels with details of hull cost, woodwork, engines, fittings etc, including of Stephenson's 'Titania' and her refitting as 'Themis'.
/3 indexed office register of ships built by Russell between ca.1853 and 1860 listing 63 vessels including 'Great Eastern', with details of dimensions, tonnage, draft, boilers etc, particulars of 'El Rey d'Jaymes II', details of screw collier 'Nightingale' and 4p of specifications of 'Great Eastern'.
/4 office register containing details of ship engines, boilers etc of ships completed 1852-59, and with 'Indicator Diagram - Gt Eastern/Trip from Weymouth to Holyhead Oct 1859/...Mr Halford, H.M.Dockyard Woolwich.
/5 notes on physics, thermometers, gases, heat etc kept between 1856 Nov 19 and 1857 Jan 21, with reversed at end calculations of displacement of 1859 Dec including calculations of stability of the 'Great Eastern'.
/6 general notebook on naval architecture, displacement etc, 1862-63.
/7 general notebook, beginning as an office register to steam ships, but with further rough notes made on trip to France in 1867 Apr etc.