World War I: an advanced dressing-station by the roadside. Oil painting attributed to Francis James Barraud. https://www.rawpixel.com/image/14003703/image-horse-people-skyFree Image from public domain licenseVintage European style steam locomotive engraving from The Tourists' Handy Guide to Scotland by William Paterson (1880).… https://www.rawpixel.com/image/556360/vintage-steam-train-illustrationFree Image from public domain license