The Transatlantic accent, known also as the Mid-Atlantic accent, sounds like a newspaper barker from the 1940's or, yes, like Dorothy Gale as she cries out for Auntie Em in The Wizard of Oz.

That dialect is called the mid-Atlantic accent, and Dan Nosowitz researched its roots for an article on the website Atlas Obscura. Welcome to the program. DAN NOSOWITZ: Thanks for having me.

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What we formally call the mid-Atlantic accent first came about in the era of "talkies,". or the first movies to have sound, in the 1920s.