Q. What is the difference between a Library of Congress Control Number and a Preassigned Control Number?


The Library of Congress Control Number (LCCN) is the number associated with the bibliographic record created by the Library of Congress or another library for a given book. Strictly speaking the LCCN is the control number for the bibliographic record, not the book

Preassigned Control Number (PCN) is a Library of Congress Control Number which has been "preassigned" to a given work prior to the work's publication. A publisher of an eligible work may obtain a PCN if the work has not yet been published. Published works are otherwise assigned a LCCN during the cataloging process, if they have been selected for addition to the Library of Congress' collections.

  • Last Updated May 22, 2020
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  • Answered By Veronica Ranieri

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