The National Archives collects and preserves information relevant to the history of the United States.
"Of all documents and materials created in the course of business conducted by the United States Federal government, only 1%-3% are so important for legal or historical reasons that they are kept by us forever.
Those valuable records are preserved and are available to you, whether you want to see if they contain clues about your family’s history, need to prove a veteran’s military service, or are researching an historical topic that interests you." from web site
The official site of the President of the United States is a resource for information from the executive branch of the federal government. Updates include current news, press briefings, proclamations, executive orders, and radio addresses.
Biographical information on this site includes that of the previous Presidents, Vice Presidents, and First Ladies.
"Once fully complete, the World Treaty Index will feature every known international agreement in the 20th Century. This includes tens of thousands agreements entered into by hundreds of countries and international organizations. We offer a variety of methods to access the underlying data. Currently, this website only contains treaties signed between 1945 and 1999." - from website