First there is this from The Writer's Almanac:
It was on this day in 1814 that Francis Scott Key was inspired to write the words to "The Star-Spangled Banner," by witnessing the British attack on Fort McHenry in Baltimore Harbor. It had been a dark summer for the young United States. Just three weeks previous, on August 24, British troops had set fire to much of Washington, D.C., including the Capitol, the Treasury, and the president's house. President James Madison had been forced to flee for his safety. Americans were terrified that the British might choose to invade New York or Philadelphia or Boston and destroy those cities as well.
The British had recently begun using rockets, a new military weapon adapted from Chinese technology. Francis Scott Key was horrified as he watched these rockets raining down on Fort McHenry, at the mouth of Baltimore Harbor. He watched the bombardment all night, and he had little hope that the American fort would withstand the attack. But just after sunrise on September 14th, he saw the American flag still flying over the fort. In fact, Francis Scott Key might never have even seen the flag if the fort commander, Major Armistead, hadn't insisted on flying one of the largest flags then in existence. The flag flying that day was 42 feet long and 30 feet high.
Francis Scott Key began writing a poem about the experience that very morning. It turned out that the battle at Baltimore was the turning point of the war. Before the war, the American flag had little sentimental significance for most Americans. It was used mainly as a way to designate military garrisons or forts. But after the publication of "The Star-Spangled Banner," even non-military people began to treat the flag as a sacred object.
And there is this personal postscript:
Recent conduct by NFL players -- not standing during the National Anthem -- can be handled with an easy change to the game plan: do not play the National Anthem at sporting events. Instead, reserve the use of Key's song for official, governmental, military, and similarly situated situations. What could be more simple as a solution. I guess some people will disagree with me.
Future postings here at Informal Inquiries will be occasional rather than frequent.