Hawaii became the 50th state in the Union on August 21, 1959, with the new 50-star flag becoming official on July 4, 1960.
These images show the old 49-star arrangement compared to the newer 50-star arrangement.
In 1893, a group of sugar farmers and American ex-pats, backed up by American marines, deposed the last monarch of Hawaii, Queen Liliuokalani; the following year, the territory was established as a protectorate of the United States. In 1898 the strategic value of the island became more obvious and it was formally annexed.
Thanks to Pearl Harbor, Hawaii became a central part of the American consciousness in 1941. In June of 1959, a vote was held, and the people of Hawaii voted to become an American state. Statehood was officially established in August of that year.
Photo by Ken Lund