John Brown [Bruno]. Process print after W. Blake, 1795, after J. Donaldson. https://www.rawpixel.com/image/14011362/john-brown-bruno-process-print-after-blake-1795-after-donaldsonFree Image from public domain licenseElectrical machines: four figures showing various machines, with an illustration of George Adams demonstrating his medical… https://www.rawpixel.com/image/13992404/image-paper-person-artFree Image from public domain license