President of the United States: Selected Resources: Home
The White House - President Joseph R. Biden
President Donald Trump
Archived social media note: "A number of Trump administration officials, including President Trump, used personal accounts when conducting government business. The National Archives will make the social media content from those designated accounts publicly available as soon as possible."
President Barack Obama
For a full of available Presidential website archives, see: Archived Presidential White House Websites | National Archives
Volumes of the Public Papers of the Presidents from 1929 (Herbert Hoover) to 1991 (George H.W. Bush) published by NARA are made available as digital formats through GPO digitization efforts. Publications covering the John F. Kennedy, Lyndon B. Johnson, Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan, and George H.W. Bush presidencies are available in multi-book volumes. The Public Papers of the President were not published by the National Archives for the Franklin D. Roosevelt presidency; these volumes were published by a private printer before the commencement of the official Public Papers series and are not currently available in govinfo.
Guides to the Presidency of the United States
Presidential Power - prepared by the Gallagher Law Library, University of Washington School of Law
Presidents, Vice Presidents, and First Ladies of the United States - Find contact information, order of succession, and other facts about Presidents, Vice Presidents, and First Ladies, past and present.
American Presidency Project - An authoritative, non-partisan on-line source for presidential public documents built and maintained through UC Santa Barbara.