Harold Wilson former prime ministers or senior parliamentary figures. There is an extensive bibliography on Harold Wilson. He is the author of a number of books. He is the subject of many biographies (both light and serious) and academic analyses of his career and various aspects of the policies pursued by the governments he led. He features in many "humorous" books. He was the Prime Minister in the so-called "Swinging London" era of the 1960s, and therefore features in many of the books about this period of history. Harold Wilson James Harold Wilson, Baron Wilson of Rievaulx, (11 March 1916– 24 May
Prime minister and in British colonial territories as they developed self-government. In some places alternative titles such as "premier", "chief minister", "first minister of state", "president of the council" or "chancellor" were adopted, but the essentials of the office were the same. By the late 20th century, the majority of the world's countries had a prime minister or equivalent minister, holding office under either a constitutional monarchy or a ceremonial president. The main exceptions to this system have been the United States and the presidential republics in Latin America modelled on the U.S. system, in which the president directly exercises executive authority.