The Stars and Stripes, Old Glory, the Star-Spangled Banner -- however you put it, they're all the same, the American flag. Right? Wrong.

Old Glory and the Star-Spangled Banner are separate, specific flags and both are on display in the Smithsonian Institution's Museum of American History.

The Stars and Stripes -- also known (possibly mistakenly) as the Betsy Ross flag -- was the first American flag officially recognized by the Continental Congress in 1777.

The flag that inspired Francis Scott Key to compose the poem that was to become "The Star-Spangled Banner" was sewn under contract by Baltimore widow Mary Young Pickersgill in 1813.

Pickersgill, her daughter Caroline and her mother made the banner from 300 yards of handwoven wool bunting.

At 30 by 42 feet, it features 15 (not 13) stripes, each of them nearly two feet wide. Each of the 15 five-pointed stars measures two feet, from point to point.

Maj. George Armistead, commander of Baltimore's Fort McHenry, had ordered the large flag in anticipation of a battle with the British.

Old Glory had a more peaceful birth. The 9 1/2-by-17 foot flag was sewn in 1824 for William Driver, a young Salem, Mass., ship captain. As the flag was hoisted up the rigging of his ship, so the story goes, Driver shouted, "I'll call her Old Glory, boys, Old Glory!"

He carried the flag throughout his voyages, including two sails around the world. It was presented to the Smithsonian in 1922.