Franklin Roosevelt delivered a major speech to Congress on December 8, 1941, the day after the Japanese attack on Pearl Harbor. He referred to December 7, 1941 as “a date which will live in infamy” and asked Congress to declare that a state of war had existed between the U.S. and Japan since yesterday’s “unprovoked and dastardly attack.” (FDR apparently thought Congressional declarations of war could operate retroactively; Congress actually resolved that a state of war was “hereby formally declared.”)
Roosevelt left his reading copy on the podium, and it wound up in the permanent records of Congress. Here’s the third of three pages and a fraction of the second:
You can see one of his last-minute handwritten edits. He made two more on the first page. I’m told a few of President Obama’s speechwriters were shown this document on a Vault tour and approved of the changes.