Thomas Telford, Scottish civil engineer, c 1820.

'The Duke's Theatre, in Dorset Gardens', London, c 1820.

Upper and lower denture contained in porcelain holder, c 1780-1820.

Laennec's stethoscope, c 1820.

Peter Mark Roget, English physician and compiler of 'Roget's Thesaurus', c 1820.

Label for a bottle of chloride of soda, c 1820.

Joshua Brookes, British anatomist, c 1820s.

Crab winch, c 1820.

Baron Augustin Louis Cauchy, French mathematician, c 1820.

Treadle lathe, made by Henry Maudslay, c 1812-1820.

Joseph Gay-Lusac, French physicist, c 1820s.

'Harvest Home', c 1810-1820.