All That's Interesting on MSN
Play-Doh started out as a wallpaper cleaner in the 1930s. Here’s how it became one of the most popular kids’ toys in history
In the 1930s, a soap manufacturing company in Cincinnati developed a putty compound to clean coal residue off of wallpaper.
Scent might be the strongest of the senses, bringing back long-forgotten memories in an instant. Pumpkin pies at Thanksgiving. The first hyacinths in the spring. The smell of my high school band room: ...
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