The Congress of Berlin: Disraeli as a tooth-drawer, assisted by Queen Victoria, operates on Sultan Abdul Hamid II of the… https://www.rawpixel.com/image/13968281/image-dog-cartoon-personFree Image from public domain licenseRutherford Birchard Hayes, President of the United States of America 1877-1881. Photograph, 1880. https://www.rawpixel.com/image/13998634/photo-image-face-person-clothingFree Image from public domain licenseHumphry Sandwith. Stipple engraving by D. J. Pound after Watkins. https://www.rawpixel.com/image/14021921/humphry-sandwith-stipple-engraving-pound-after-watkinsFree Image from public domain licensePope Pius IX and members of the Papal court. Photograph, 1868. https://www.rawpixel.com/image/13984967/pope-pius-and-members-the-papal-court-photograph-1868Free Image from public domain licenseHumphry Sandwith. Stipple engraving by D. J. Pound after Watkins. https://www.rawpixel.com/image/14015804/humphry-sandwith-stipple-engraving-pound-after-watkinsFree Image from public domain license