On May 17, 2010, the USPS issued the first stamp in the Butterfly Series. The stamps were created for use on envelopes that couldn’t be sorted on the USPS’s automated equipment, otherwise known as “nonmachinable.” They’re often used for greeting cards.
Naturalist and artist Maria Sibylla Merian was born on April 2, 1647, in Frankfurt-am-Main, Germany. Merian spent her life studying insects and plants and capturing them in beautifully detailed paintings and drawings.
Cattle rancher Charles Goodnight was born on March 5, 1836, in Macoupin County, Illinois. One of America’s most famous cattle barons, Goodnight helped blaze a major cattle trail and is sometimes referred to as the “Father of the Texas Panhandle.”
On February 2, 1971, the Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat, also known as the Convention on Wetlands, was signed in Ramsar, Iran.
On October 10, 1858, the first shipment of overland mail arrived in San Francisco.
On September 20, 2011, the USPS issued its fourth Semipostal stamp, which raises money for wildlife conservation.
On September 12, 1962, President John F. Kennedy delivered one of his most famous and stirring speeches, to generate support for the Apollo program.
On June 14, 2008, the USPS issued the first set of stamps in its Flags of Our Nation Series.