Women's History Month groups promoting this interest are state historical societies, women's organizations, and groups such as the Girl Scouts of the USA. Women's History Month Women's History Month is an annual declared month that highlights the contributions of women to events in history and contemporary society. It is celebrated during March in the United States, the United Kingdom, and Australia, corresponding with International Women's Day on March 8, and during October in Canada, corresponding with the celebration of Persons Day on October 18. In the United States, Women's History Month traces its beginnings back to the first International Women's Day in 1911.
Christopher Columbus in Chicago, 1893, commemorated the 400th anniversary of the landing of Christopher Columbus in the Americas. Over 27 million people attended the exposition during its six-month duration. The United States Postal Service participated in the celebration issuing the first US "commemorative postage stamps, a series of 16 postage issues called the Columbian Issue depicting Columbus, Queen Isabella and others in the various stages of his several voyages. The issues range in value from the 1-cent to the 5-dollar denominations. Under Benjamin Harrison and his Postmaster General John Wanamaker the Columbian commemorative stamps were made available and were first issued at