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Alaska keeps its warning against tobacco sales to minors simple, requiring retailers to post these words where customers can easily see them: "The Sale of Tobacco Products to Persons Under Age 19 is Illegal."
Delaware requires bold red and black graphics. "Under 18? Don't Even Try to Buy."
And in Oklahoma, the state-required sign comes in orange. "It's The Law. We Do Not Sell Tobacco Products to Persons Under 18 Years of Age."