Section of main mesenteric artery, with structural decomposition and invasion of cavity, showing thrombus attached to the fold of a growth, in a male patient with fatal thrombosis and inflammation of the arteries. Watercolour by Barbara E. Nicholson, 1947.

Ashford, Middlesex, 1947.

1 painting : watercolour, with gouache ; sheet 64.8 x 13.1 cm

Barbara Evelyn Nicholson (1906 – 1978) trained at the Royal College of Art, graduating in 1923. She began her artistic career as a medical illustrator and was a founder member of the Medical Artists Association, where she is recorded as serving on an exhibition committee in October 1949. By 1951, she had illustrated G.F. Gibberd, A short textbook of midwifery (2nd ed., London: J. & A. Churchill, 1941) and Philip Wiles, Essentials of orthopaedics (London: J. & A. Churchill, 1949). The Medical Artists Association records last list her, in 1951. In the 1950s her focus moved to botanical subjects and from the late 1950s – 1970s she was a prolific botanical illustrator.

Sup<erior> mesenteric, a, aorta, thrombus Lettering in black ink, typed accompanying note details observations at autopsy of contraction and growth in the arteries, with an old thrombus forming sub-intimeally, beneath a strip detached endothelium Lettering in pencil as chapter eighteen inclusion and polite note to printer's block-maker, to produce the image in black and white (evidence of intention to publish the watercolours as illustrations) Bears number: 73/1947

The watercolours and pen and ink drawings held by Wellcome Collection were painted by Barbara Nicholson at Ashford Hospital, Ashford, Middlesex, between 1946 and 1951, at the request of the surgeon Norman Matheson.

Wellcome Collection 32176i

Presented to the Wellcome Institute Library in 1987 by Ashford Postgraduate Medical Centre, as part of a collection of medical illustrations by Barbara E. Nicholson.