This Day in History ClassThis Day in History Class

The U.S. Postal Service introduces the ZIP Code - July 1st, 1963

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On this day in 1963, the ZIP Code was introduced as part of a nationwide effort to improve the speed of mail delivery in the United States.

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This Day in History Class

From the desk of “Stuff You Missed in History Class,” “This Day in History Class” quickly recounts a 
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