Small Presses, Self-Publishers, Indies, Authors Who Use PODs, Unite!
Read up on Copyrights, Cataloging-In-Publication Data, and Library Of Congress Preassigned Control Number [PCN], formerly Library of Congress Card Number. Here, you can find out the difference between CIP and PCN programs, and see which you qualify to use.

 Some POD’s charge you $50 for CIP or PCN…get it for free, with one easy application per book!
Some POD’s charge you $50 to register your copyright with Library of Congress. Register it yourself for $35.