Justus von Liebig. Stipple engraving by J. Cook, 1844 (Wellcome Collection V0003554)

Stipple engraving of Justus von Liebig by J. Cook, 1844, after a painting by Trautschold. The engraving's plate text reads 'Painted by Trautschold' and 'Engraved by J. Cook,' with the caption 'Dr JUSTUS LIEBIG, Professor of Chemistry in the University of Giessen.' This self-identifying inscription on the plate is the basis for the named identification. The source URL points to the current Wellcome Collection record; the Wikimedia Commons file record identifies the Wellcome image as V0003554 and states CC BY 4.0.