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“…the official publications of materials released by the White House Press Secretary. The Compilation of Presidential Documents is published by the Office of the Federal Register (OFR), National Archives and Records Administration (NARA).” “This collection integrates material from the weekly publication dating from 1993, with Daily Compilation material as published from January 20, 2009 – forward. Documents appearing in the Compilation of Presidential Documents collection are edited for accuracy and annotated with additional information to provide an authoritative record of the Presidency. It includes such material as: Proclamations, Executive orders, speeches, press conferences, communications to Congress and federal agencies, statements regarding bill signings and vetoes, appointments, nominations, reorganization plans, resignations, retirements, acts approved by the President, nominations submitted to the Senate, White House announcements, press releases.”
Primary source materials from the Presidential Libraries. "Presidential Libraries preserve ... official records ... [and ]... personal papers of Presidential family members, associates, and friends, dynamic audio and visual collections. Together, these archival materials provide a comprehensive view of our Presidents and our history."
Search Wikipedia for your president/presidency and scroll to the end of the Wikipedia article itself to examine the notes, references, bibliography, further reading, and external links sections. These listings often are valuable sources of scholarly materials.