In answer to your query : copyright registration of books, manuscripts, and speeches.

Bibliographic Details
Corporate Author:	Library of Congress. Copyright Office
Format:	Government Document Book
Language:	English
Published:	[Washington, D.C.] : [U.S. Copyright Office], [2004]
Subjects:	Copyright > United States. Copyright > Manuscripts > United States. Copyright > United States > Speeches, addresses, etc.
Online Access:	https://purl.fdlp.gov/GPO/LPS44299

Available Online