Who made the first tootsie roll pop?

The Tootsie Roll Pop was invented by William Keller in 1931. Keller was an employee of the Sweets Company of America, which was later acquired by Tootsie Roll Industries. The Tootsie Roll Pop was Keller's attempt to create a lollipop that would not melt easily in warm weather. The candy became a sensation and has been around ever since.