When Harrison arrived in Washington, he wanted to show that he was still the mighty hero of the Battle of Tippecanoe. He took the oath of office on March 4, 1841, an extremely cold and windy day. He wore no overcoat and delivered the longest inaugural address in American history. It took nearly two hours to read, even after his friend Daniel Webster had shortened it.
Harrison later caught a cold, which then got much worse. His doctors tried everything, applying opium, castor oil, plants, and even snakes. The treatments made Harrison worse and he went into delirium. He died on April 4, 1841, of pneumonia, jaundice, and septicemia.