Apple's Macbook Air, digital device, location unknown, 20 February 2017. https://www.rawpixel.com/image/6113599/photo-image-public-domain-logo-laptopFree Image from public domain license
Physiognomy: template for explaining lines of the forehead https://www.rawpixel.com/image/13982321/physiognomy-template-for-explaining-lines-the-foreheadFree Image from public domain license
Ademluchtfles voor gebruik tijdens het duiken (1474 - 1535) by anonymous https://www.rawpixel.com/image/13768385/ademluchtfles-voor-gebruik-tijdens-het-duiken-1474-1535-anonymousFree Image from public domain license