Via Flickr:Original Vanity Fair Print, otherwise known as a Spy Print after the most renowned artist of the genre, Leslie Ward.
This colour lithograph is dated 17th December 1871 with the caption There is no man of greater weight in his profession.
The subject is Sir William Fergusson, a renowned Medical man of the Victorian Era.
The artist signed APE was Carlo Pellegini.
extract from Wikipedia. There is much more about this fascinating man to be seen there.
William Fergusson son of James Fergusson of Lochmaben, Dumfriesshire, was born at Prestonpans, East Lothian on 20 March 1808, and was educated first at Lochmaben and afterwards at the high school and University of Edinburgh. At the age of fifteen he was placed by his own desire in a lawyer’s office, but the work proved uncongenial, and at seventeen he exchanged law for medicine, in accordance with his father’s original wishes. He became an assiduous pupil of Dr. Robert Knox the anatomist, who was much pleased with a piece of mechanism which Fergusson constructed, and appointed him at the age of twenty demonstrator to his class of four hundred pupils