Since the dedication of our Headquarters building in 1975, we have been proud to be part of Pennsylvania Avenue, "the nation's ceremonial route," and to help illustrate the development of the Stars and Stripes since 1775. Ten historic flags are flanked on either side by today's 50-star flag, representing the 50 states of the Union.

The historic flags include:

• The Grand Union, or Continental Colors, serving from 1775-1777, was first raised on January 1, 1776, on Mount Pigsah, Massachusetts, about the time the Continental army came into formal existence. It combined the British Union Jack and 13 stripes, signifying Colonial unity.
• The Flag of 1777, which had no official arrangement for the 13 stars. It was flown by John Paul Jones on the USS Ranger and was the first American flag to be recognized by a foreign power.
• The Betsy Ross Flag, 13 stars, designed by George Washington, Betsy Ross, and Francis Hopkinson. Although rarely used, it was adopted by Congress on June 14, 1777—the official date of today's Flag Day.
• The Bennington Flag, 13 six-pointed stars, allegedly flown August 16, 1777, over military stores at the Battle of Bennington, Vermont, when the Vermont militia beat back a superior British force.
• The Star Spangled Banner, 15 stars and 15 stripes, immortalized by Francis Scott Key in our National Anthem during the bombardment of Ft. McHenry, Maryland, in September 13, 1814.
• The Flag of 1818, 20 stars, commissioned by a Congressional Flag Act that returned the design to 13 stripes and stipulated that stars be added for each new state.
• The Great Star Flag, 20 stars, designed by Captain Samuel Chester Reid, U.S. Navy, at the request of New York Congressman Peter Wendover and flown over the U.S. Capitol on April 13, 1818.
• The Lincoln Flag, 34 stars, raised by President Lincoln on February 22, 1861, over Philadelphia's Independence Hall to send a message to Southern states, which were preparing to secede from the Union.
• The Iwo Jima Flag, 48 stars, which was commissioned in 1912 but came to symbolize our nation on February 19, 1945, when U.S. Marines raised it on Mount Suribachi after fearful fighting in World War II's Pacific campaign.
• The 49-Star Flag, commissioned in 1959 when Alaska achieved full statehood. It flew for only one year, until July 4, 1960, after Hawaii achieved its Statehood and when today's 50-star flag became official.