Plate signed by the artist, S.T. Soemmering; and by the engraver C.C. Glassbach.
Part of the book: Soemmering, Samuel Thomas von, 1755-1830. De basi encephali et originibus nervorum cranio egredientium libri quinque : cum IV. tabulis æneis. Goettingæ [Göttingen]: Prostant apud Abr. Vandenhoeck viduam, 1778.