Library of Congress Number
Do you want libraries to accept and catalog your book? If you said, “Yes, I do!” — then you’ll need a Library of Congress Control Number (LCCN).
An LCCN is a unique identifier assigned by the Library of Congress to help libraries across the country catalog your book accurately. It’s an essential step for authors who dream of seeing their titles on library shelves — and the best part? It’s completely free!
✨ Important Details
Before you rush to apply, here are a few key things to remember:
You must apply for an LCCN before publication.
The number must be printed on your copyright page.
The program is only available to U.S. authors and publishers, and your book must list a U.S. place of publication.
If anyone is charging you for this service, you’re not on the official site — the genuine process costs nothing.
Expect confirmation within one to two weeks, sent via email.
🖋️ How to Apply
Create an account with the PrePub Book Link (PPBL) — the official system the Library of Congress uses for LCCN requests. You can find it by searching for “Library of Congress PrePub Book Link” or you can use this link directly, PPBL to make sure you are on the correct website.
Once your account is set up, complete the application by entering details like:
Author’s name
Publisher’s name (your own, your LLC, or a third-party publisher)
Page count
Brief description of your book
After publication, you’ll be asked to mail a copy of your book to the Library of Congress. The correct mailing address will be provided during your application process.
📖 Why It Matters
The LCCN system was designed to streamline cataloging across U.S. libraries. It allows librarians everywhere to access standardized bibliographic information directly from the Library of Congress — making it easier for them to stock new titles efficiently. Once upon a time, this was done with physical catalog cards; now, it’s all part of a modern, web-based database that helps your book find its place in the literary world.
We hope this guide helps you take that next exciting step in your publishing journey!
Have questions, insights, or your own experiences with the LCCN process? Drop a comment below — we’d love to hear from you.
Until next time — happy writing, happy reading, and happy living! 💛
