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The Crayon Man: The True Story of the Invention of Crayola Crayons by Natascha Biebow
Crayon - Wikipedia
Crayola Crayons History - Fun Facts About Crayola Crayons
VCA Iselin Animal Hospital - It's National Crayola Day! What color in the box are you? Crayola crayons were invented by cousins Edwin Binney and C. Harold Smith, who had formed Binney