Bottom line: In 1915, Coke announced a competition for the design of its bottles, when its co-founder, Benjamin Thomas, suggested the need for a bottle that was different than any on the market.
Enter Earl R. Dean of the Root Glass Company of Terre Haute, Indiana, who found a sketch of a cocoa pod in a local library and designed a prototype based on that.
Dean’s bottle was never mass produced — its bottom was smaller than the middle — but with a few tweaks, his design became the bottle (and brand) we know and love today.