A team of researchers are using multispectral imaging to uncover hidden text on a 1491 Martellus map, one of the most important maps in history. Lead researcher Chet Van Duzer thinks the discoveries will allow historians and scholars to see just how the map influenced cartography in its time.
Civil War veteran 1st Lt. Alonzo H. Cushing will receive the Medal of Honor posthumously for his actions at the Battle of Gettysburg in 1863. Robert Siegel talks to Kent Brown, author of Cushing of Gettysburg.
Sunday is the 200th anniversary of the day Francis Scott key penned what came to be known as "The Star-Spangled Banner" as he observed the American flag still flying over Baltimore Harbor's Fort McHenry after a night of British bombardment. He set his lyrics to "The Anacreontic Song."
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