Below is a listing of the the Cabinet level executive agencies of the US Federal government and links to their pages.
White House web site provides access to the oral and written communications from the President.
Weekly Compilation of Presidential Documents is published every Monday and is the official publication of presidential statements, messages, remarks, and other materials released by the White House Press Secretary. Online coverage is available from 1993 to the present.
President's Cabinet dates back to the beginnings of the Presidency itself. One of the principal purposes of the Cabinet (drawn from Article II, Section 2 of the Constitution) is to advise the President on any subject he may require relating to the duties of their respective offices.