Today is Wednesday, Sept. 9, the 252nd day of 2015. There are 113 days left in the year.

On this date:

In 1543, Mary Stuart was crowned Queen of Scots at Stirling Castle, nine months after she was born.

In 1776, the second Continental Congress made the term “United States” official, replacing “United Colonies.”

In 1850, California became the 31st state of the union.

In 1893, Frances Cleveland, wife of President Grover Cleveland, gave birth to a daughter, Esther, in the White House; it was the first (and, to date, only) time a president’s child was born in the executive mansion.

In 1919, some 1,100 members of Boston’s 1,500-man police force went on strike. (The strike was broken by Massachusetts Gov. Calvin Coolidge with replacement officers.)

In 1926, the National Broadcasting Co. (NBC) was incorporated by the Radio Corp. of America.

In 1948, the Democratic People’s Republic of Korea (North Korea) was declared.

In 1956, Elvis Presley made the first of three appearances on “The Ed Sullivan Show.”

In 1971, prisoners seized control of the maximumsecurity Attica Correctional Facility near Buffalo, New York, beginning a siege that ended up claiming 43 lives.

In 1976, Communist Chinese leader Mao Zedong died in Beijing at age 82.