On August 23, 1969, the US Post Office issued a set of four stamps for the 11th International Botanical Congress (IBC). They were the first US stamps that honored flora from each of the four corners of the United States and the first to include Latin names.
On August 5, 1963, the US, the UK, and the Soviet Union signed the Limited Nuclear Test Ban Treaty. Eventually, more than 100 countries agreed to prohibit nuclear tests in the atmosphere, in outer space, and underwater.
Doctor Paul Dudley White was born on June 6, 1886, in Roxbury, Massachusetts. Often considered the founder of preventive cardiology, he helped to found the American Heart Association and later served as its president.
On May 7, 1847, the American Medical Association (AMA) was founded, thanks in large part to Nathan Smith Davis. Since its creation, the AMA’s mission has been “to promote the art and science of medicine and the betterment of public health.”
On May 4, 2005, the USPS issued the first set of stamps in the American Scientists Series.
On April 19, 1897, the American Osteopathic Association was formed. Osteopathy is an alternative medical practice that focuses on the manipulation of muscle tissue and bones.
On April 7, 1948, the World Health Organization (WHO) was officially created as a specialized agency of the United Nations. The WHO coordinates international efforts to combat outbreaks of infectious diseases and conduct research and education.
On April 6, 1999, the USPS issued the first stamp sheet in its 12-year Nature of America series. This popular series featured the first US self-adhesive sheets designed as one large scene.
On March 10, 1876, Alexander Graham Bell transmitted the first words by telephone, to his assistant in another room. Bell had received his patent for the telephone three days earlier.