Commemorative stamp in the context of Definitive stamp

The Imperial Rescript on Education (教育ニ関スル勅語, Kyōiku ni Kansuru Chokugo), or IRE for short, was signed by Emperor Meiji of Japan on 30 October 1890 to articulate government policy on the guiding principles of education on the Empire of Japan. The 315 character document was read aloud at all important school events, and students were required to study and memorize the text.

An overprint is an additional layer of text or graphics added to the face of a postage or revenue stamp, postal stationery, banknote or ticket after it has been printed. Post offices most often use overprints for internal administrative purposes such as accounting but they are also employed in public mail. Well-recognized varieties include commemorative overprints which are produced for their public appeal and command significant interest in the field of philately.

Postal cards are postal stationery with an imprinted stamp or indicium signifying the prepayment of postage. They are sold by postal authorities. On January 26, 1869, Dr. Emanuel Herrmann of Austria described the advantages of a Correspondenz Karte. By October 1, 1869 the world's first postal card was produced by Austria-Hungary. They caught on quickly. By the end of 1870, Great Britain, Finland, Switzerland and Württemberg joined the countries issuing postal cards. In the United States, they were first produced in 1873. Some of the forms taken by postal cards include the regular single card which may be commemorative or definitive, attached message-reply cards, airmail postal cards, and official postal cards used for official government business with a "penalty for private use".

To the post office, there were positive advantages to postal cards as opposed to correspondence in envelopes. The cards were lighter and less bulky than letters and they were all the same size. The result was that they occupied less than one third of the space required by the same number of letters. To the public there were also advantages. They were simple and cheap making them an instant success. Britain had a half-penny rate to begin with. The U.S. "penny postcard" rate lasted through 1951.

"Atoms for Peace" was the title of a speech delivered by U.S. president Dwight D. Eisenhower to the UN General Assembly in New York City on December 8, 1953.

The United States then launched an "Atoms for Peace" program that supplied equipment and information to schools, hospitals, and research institutions within the U.S. and throughout the world. The first nuclear reactors in Israel and Pakistan were built under the program by American Machine and Foundry, a company more commonly known as a major manufacturer of bowling equipment.