Public figures live on within the words they are remembered by. To understand the effect they had on history, their words need to be documented.
No one is absolutely sure of exactly what Abraham Lincoln said in his most famous speech, the Gettysburg Address. Five known manuscripts exist, but all are slightly different. Every newspaper story from the day contains a different account.
In the case of modern presidents, for the official record, we rely on transcriptions of all their speeches collected by the national government.
But in the case of Donald Trump, that historical record is likely to have a big gap. Almost 10% of his public speeches as president are excluded from the official record. That means a false picture of the Trump presidency is being created in the official record for posterity.
In 1957, the National Historical Publications Commission, a part of the National Archives, recommended developing a uniform system so all materials from presidencies could be archived. They did this to literally save presidential records from the flames: Warren G. Harding's wife claimed to have burned all his records, and Robert Todd Lincoln burned all his father's war correspondence. Other presidents who had their records intentionally destroyed include Chester A. Arthur and Martin Van Buren.
So the government collects and retains all presidential communications — including executive orders, announcements, nominations, statements and speeches. This includes any public verbal communications by presidents, which are also placed in the Compilation of Presidential Documents.
These are part of the official record of any administration, published by the National Archives. In most presidencies, the document or transcript is available a few days to a couple of weeks after any event. At the conclusion of an administration, these documents form the basis for the formal collections of the Public Papers of the President.
As a political scientist, I'm interested in where presidents give speeches. What can be learned about their priorities based on their choice of location? What do these patterns tell us about administrations?