Electricity: electrical equipment, batteries, etc. Coloured engraving, 1804, by J. Pass, after H. Lascelles. https://www.rawpixel.com/image/13968015/image-public-domain-architecture-frogsFree Image from public domain licenseThe Medical Cold Baths, and Fenton's Hotel, St. James's Street, London. Watercolour attributed to T. C. Dibdin. https://www.rawpixel.com/image/13967008/image-art-watercolour-villaFree Image from public domain licenseLandscape with Castle and Shepherd Tending Flock by Cornelis Ploos van Amstel and Cornelis Brouwer https://www.rawpixel.com/image/12038756/image-dog-cloud-cowFree Image from public domain licenseThomas Pennant. Stipple engraving by Holl after T. Gainsborough, 1776. https://www.rawpixel.com/image/13981395/thomas-pennant-stipple-engraving-holl-after-gainsborough-1776Free Image from public domain licenseThomas Pennant. Stipple engraving by W. H. Lizars, after T. Gainsborough, 1776. https://www.rawpixel.com/image/14008725/thomas-pennant-stipple-engraving-lizars-after-gainsborough-1776Free Image from public domain licenseThomas Pennant. Stipple engraving, after T. Gainsborough, 1776. https://www.rawpixel.com/image/13999113/thomas-pennant-stipple-engraving-after-gainsborough-1776Free Image from public domain licenseChrist's Hospital, London: the Mathematical School. Etching in two colours by B. Green, 1793, after himself, 1775. https://www.rawpixel.com/image/14003667/image-paper-christs-personFree Image from public domain licenseThomas Pennant. Stipple engraving by J. Hopwood, 1799, after T. Gainsborough, 1776. https://www.rawpixel.com/image/14019754/image-cartoon-face-personFree Image from public domain licenseChrist's Hospital, London: the library and part of the Cloisters in 1765. Etching by B. Green, 1793, after himself. https://www.rawpixel.com/image/14000522/image-paper-christs-personFree Image from public domain licenseElectricity: electrical equipment, batteries, etc., and frogs' legs. Engraving, 18--, by Cooper. https://www.rawpixel.com/image/14005854/image-paper-cartoon-personFree Image from public domain licenseThomas Pennant. Stipple engraving by J. Hopwood after J. Wills. https://www.rawpixel.com/image/13992764/thomas-pennant-stipple-engraving-hopwood-after-willsFree Image from public domain licenseThomas Pennant. Mezzotint by C. Tomkins, 1869, after T. Gainsborough, 1776. https://www.rawpixel.com/image/13991148/thomas-pennant-mezzotint-tomkins-1869-after-gainsborough-1776Free Image from public domain license