Hands showing the French sign language alphabet. Wood engraving. https://www.rawpixel.com/image/14006650/hands-showing-the-french-sign-language-alphabet-wood-engravingFree Image from public domain licenseFranz Herrmann Czech, with deaf children. Engraving, 1836. https://www.rawpixel.com/image/13972850/franz-herrmann-czech-with-deaf-children-engraving-1836Free Image from public domain licenseSaint Mary (the Blessed Virgin) with the Christ Child. Stipple engraving by A. Gamble after Annibale Carracci. https://www.rawpixel.com/image/14006530/image-cartoon-face-christFree Image from public domain licenseFive decrepit doctors crushed together in consultation. Coloured lithograph after L. Boilly, c. 1823. https://www.rawpixel.com/image/13971858/image-dog-cartoon-faceFree Image from public domain licenseAsylum for the deaf and dumb, Camberwell. Engraving, 1834. https://www.rawpixel.com/image/13976588/asylum-for-the-deaf-and-dumb-camberwell-engraving-1834Free Image from public domain licenseA stockbroker feigning deafness to avoid paying the man who claims to have restored his hearing. Coloured etching, 1786. https://www.rawpixel.com/image/13978127/image-cartoon-person-bookFree Image from public domain license