What is the Preassigned Card Number or PCN Program?
The purpose of the Preassigned Card Number (PCN) program is to enable the Library of Congress to assign LCCN numbers in advance of publication to those titles that may be added to the Library’s collections later. The publisher prints the card number in the book and thereby facilitates cataloging and other book processing activities. The PCN is a control number. It links the book to any record which the Library of Congress, other libraries, bibliographic utilitites, or book vendors may create. The LCCN number is placed on the publications page of your book, on your marketing and promo material, and in your communications.
