Florence Nightingale. Coloured mezzotint by C.A.Tomkins, 1855, after J. Butterworth. https://www.rawpixel.com/image/13973710/image-angels-face-personFree Image from public domain licenseFlorence Nightingale. Mezzotint by C.A. Tomkins, 1855, after J. Butterworth. https://www.rawpixel.com/image/14017865/florence-nightingale-mezzotint-ca-tomkins-1855-after-butterworthFree Image from public domain licenseFlorence Nightingale. Mezzotint by C.A. Tomkins, 1855, after J. Butterworth. https://www.rawpixel.com/image/13998775/florence-nightingale-mezzotint-ca-tomkins-1855-after-butterworthFree Image from public domain license