Red Letter Day: U.S. Postal Service Continues 100th Anniversary Commemoration

WASHINGTON, June 11, 2018 /PRNewswire-USNewswire/ --What: First-day-of-issue dedication ceremony for the second United States Air Mail Forever stamp. The event is free and open to the public. Please share the news using the hashtags #AirMailStamps and #USAirMail.When:...