T
he US Post Office Department (later renamed the USPS) begins the first regular airmail service in the world.
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he US Post Office Department (later renamed the USPS) begins the first regular airmail service in the world.
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Created:Jan 29, 2008
Modified: Jul 19, 2011
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Fold3, Today In History- May 15 (https://www.fold3.com/memorial/2351/today-in-history-may-15/facts : accessed May 3, 2024), database and images, https://www.fold3.com/memorial/2351/today-in-history-may-15/facts