Ah, the heady days of 1994. Back then, computers were beige and sold with surfing cow wallpaper, and we liked it that way, dammit. Flickr user Jason Scott stumbled on an old CD (for Windows 3.1 ...

Mary Magdalene (c. 1859) by Frederick Sandys has a background of fashionable emerald green Victorian wallpaper, which very likely would have contained arsenic. Delaware Art Museum, Samuel and Mary ...

Someone even has a collection of all the old Windows wallpapers from 2000 onwards, re-scanned in at least HD, if not 4K from Getty Images and other original sources.