From the Archives: “LOC Acronyms Explained”

Welcome back to our Tuesday segment, where we’ll be revisiting some of our most popular posts from the last few years.  What’s stayed the same?  And what’s changed?  We’ll be updating you on the facts, and taking a new (and hopefully refreshing) angle on a few timeless classics of Self Publishing Advisor.


[ Originally posted: November 1st, 2011 ]

If you are an aspiring author, you’ve probably heard the terms LOC, LCCN, CIP and PCN. But what do this acronyms mean, and which ones are important? Read on to find out.

LOCLibrary of Congress. It is the largest library in the world, and its mission is “to support the Congress in fulfilling its constitutional duties and to further the progress of knowledge and creativity for the benefit of the American people.” To learn more about the LOC, visit

LCCN– Library of Congress Control Number. This number is similar to an ISBN. It can be helpful when marketing your book to libraries, but it not necessary for publication. To learn more about this number, read Who Needs a LCCN?.

CIPCataloguing in Publication. This program creates a bibliographic record that is printed on the verso of the title page. This program is not available to self-published authors.

PCN – Preassigned Control Number. This is the self publishing alternative to a CIP. This program creates a LCCN prior to publication. Self publishing  companies provide authors with this service.

I’d love to hear your questions or concerns about LOC acronyms. Feel free to leave comments, and I will try to address you questions directly or in future posts.

– by Cheri Breeding

library of congress
Main Hall and dome ceiling, Library of Congress, Washington, DC

Honestly, Cheri did such a stellar job with this subject the first time around–short and sweet, just the way we like it!–that I don’t have much to add, except by way of reminder that while the world of publishing and self-publishing is constantly evolving, the Library of Congress (LOC) and its systems remain a steadfast part of our lives. The LOC continues to offer vital ongoing services to authors and readers of all walks of life, and the current Librarian of Congress, Carla Hayden, is an advocate for marginalized and underserved populations everywhere.

She’s pretty great.

carla hayden

And of course–don’t neglect to file for the various LOC numbers! Booksellers often push back against selling books without them, and libraries will struggle to catalog them. It’s simple and straightforward, we promise! You can read all about it in our post backlist.

Thanks for reading.  If you have any other ideas, I’d love to hear them.  Drop me a line in the comments section below and I’ll respond as quickly as I can.  ♠


ABOUT KELLY SCHUKNECHT: Kelly Schuknecht is the Executive Vice President of Outskirts Press. In addition to her contributions to the Outskirts Press blog at, Kelly and a group of talented marketing experts offer book marketing services, support, and products to not only published Outskirts Press authors, but to all authors and professionals who are interested in marketing their books and/or careers. Learn more about Kelly on her blog,

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