Charles M Schwab, President of the Carnegie Steel Company, c 1890.

Combination locomotive injector, c 1884.

Combination locomotive injector, c 1884.

Illustration of a man operating an optical pyrometer from the Cambridge Scientific Instrument Co.

Catalogue illustration of an optical pyrometer.

'South Gate House, New Reservoir, during Construction', New York, 1862.

'South Gate House, New Reservoir, during Construction', New York, 1862.

Woolf's Water Tube Boiler, 1819.

Victoria Park drinking fountain, London, 1862.

Rolling armour plates at Sheffield, South Yorkshire, 1862.

'Restful Holidays on Quiet Waters', M & GNR poster, 1914.

Apparatus for showing the mechanical equivalent of heat, 1884.