An écorché face showing the muscles involved in the expression of terror. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13965577/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the muscles involved in the expression of terror. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13960668/image-cartoon-face-personFree Image from public domain licenseAn écorché face weeping, showing the muscles involved. Stipple engraving by H. Singleton after G.T. Stubbs after G. Stubbs… https://www.rawpixel.com/image/13998516/image-cartoon-face-personFree Image from public domain licenseAn écorché face weeping, showing the muscles involved. Stipple engraving by H. Singleton after G.T. Stubbs after G. Stubbs… https://www.rawpixel.com/image/13973479/image-paper-cartoon-faceFree Image from public domain licenseAn écorché face weeping, showing the muscles involved. Stipple engraving by H. Singleton after G.T. Stubbs after G. Stubbs… https://www.rawpixel.com/image/14001580/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the muscles involved in the expression of terror. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13980813/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the movements of facial muscles during laughter. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13971599/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the state of the facial muscles during relaxation. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13973973/image-cartoon-face-frameFree Image from public domain licenseBullock's Museum, (Egyptian Hall or London Museum), Piccadilly. Coloured aquatint, attributed to T. H. Shepherd, 1815. https://www.rawpixel.com/image/13983562/image-horse-person-artFree Image from public domain licenseAn écorché face showing the movements of facial muscles during laughter. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13984893/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the movements of facial muscles during laughter. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13972854/image-paper-cartoon-faceFree Image from public domain licenseAn écorché face showing the state of the facial muscles during relaxation. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/13994519/image-cartoon-face-personFree Image from public domain licenseAn écorché face showing the state of the facial muscles during relaxation. Stipple engraving by H. Singleton after G.T.… https://www.rawpixel.com/image/14007046/image-cartoon-face-personFree Image from public domain license