What is a Library of Congress Control Number (LCCN)? Is it the same as a copyright registration?
The LCCN is a unique identification number that the Library of Congress assigns to titles most likely to be acquired by the Library of Congress. Librarians use the LCCN to access the associated bibliographic record in the Library of Congress’s database or to obtain information on various book titles on other databases. The publisher prints the LCCN on the back of the title page in the following manner: “LCCN: 2001012345.” The LCCN is NOT the same as a copyright registration even though they are both filed with the Library of Congress.