On July 7, 1838, Congress approved an act that declared all United States railroads as post roads. This would lead to a dramatic increase in the use of railroads to deliver mail.
On June 15, 1942, the Post Office Department inaugurated its V-Mail service. During World War II, letters bound for service personnel were photographed and transferred to microfilm. This special process enabled letters to take up a fraction of their usual space on planes going to war zones, allowing more room for crucial supplies.
On or around April 29, 1895, the US Post Office began issuing postage stamps with watermarks. The practice was introduced by the Bureau of Engraving and Printing (BEP) and only lasted a little over 20 years.
On March 22, 1917, the US Post Office rushed to issue two new stamps to meet an urgent need. These high-value stamps were needed quickly for use on packages going to Europe.
On March 11, 1977, the USPS issued its first se-tenant stamps in booklet form. The stamps had two different denominations, one to meet the first-class rate and one to meet the postcard rate. This issue also included the first multi-color booklet stamp.
On March 3, 1879, an Act of Congress authorized the use of Postage Due stamps. These stamps were unique, since they were the first US stamps that didn’t prepay for the delivery of mail. Instead, they denoted the amount of postage to be collected by the person receiving the mail because it was insufficiently prepaid.
On January 28, 2013, the USPS issued the first stamp in its Global Forever Series. These stamps are used on international mail.
On January 8, 1963, Chester Noongwook made his final trip delivering mail in Alaska via dog sled.