In the 19th century, wallpaper became an increasingly popular home decor trend among Americans. Influenced by the culture of Victorian England, these wallpapers were adorned with loud patterns, flowers, animals, and a lot of colors.
But those bright, vibrant hues held a dark secret.
“In the mid-19th century, green became a very popular color. And the way to get the various hues of green was to mix it with arsenic,” explained the Michigan History Center's Rachel Clark.