Painting. [Thomas Graham (1805-1869), chemist] / by Alexander Craig, 1860. Oil on canvas,128x101cm in gilt frame, 140x113.5x4cm. Commissioned by Bennet Woodcroft after the 1837 oil by John Graham Gilbert (1794-1866). Portrait, TQL slightly to L, right hand resting on table beside chemical apparatus. Sitter was a chemist, Master of the Mint and Woodcroft's brother-in-law

This portrait formed part of the Bennet Woodcroft Bequest, which was among the founding collections of the Science Museum. Woodcroft had developed a 'National Gallery of Portraits of Inventors, Discoverers and Introducers of the Useful Arts’ combining gifts, loans and purchases of portraits, while acting as the first curator of the Patent Museum.