What did Robert Ripley mention in “Believe It or Not!" on 3 November 1929?

LeRoy Robert Ripley (December 25, 1890 – May 27, 1949) was an American cartoonist, entrepreneur, and amateur anthropologist who is known for creating the Ripley's 'Believe It or Not!' newspaper panel series, radio show, and television show which feature odd facts from around the world.

On November 3, 1929, he drew a panel in his syndicated cartoon saying "Believe It or Not, America has no national anthem." Despite the widespread belief that "The Star-Spangled Banner", with its lyrics by Francis Scott Key set to the music of the English drinking song "To Anacreon in Heaven", was the United States national anthem, Congress had never officially made it so. In 1931, John Philip Sousa published his opinion in favor of giving the song official status, stating that "it is the spirit of the music that inspires" as much as it is Key's "soul-stirring" words. By a law signed on March 3, 1931, by President Herbert Hoover, "The Star-Spangled Banner" was adopted as the national anthem of the United States.