The History of the Rubber Duck

I don't recall whether I had a rubber duck to play with in the bath when I was little, but I certainly took one to college with me -and found that college dorms do not have bathtubs. No matter, I kept that rubber duck and still have it today. But how far back do those cute rubber ducks go? Further than you may think. Simon Whistler of Today I Found Out gives us the complete history of rubber duck bath toys, from the development of vulcanized rubber to the Sesame Street song "Rubber Duckie" and beyond.