---
title: "Resolve a Library of Congress Catalog Card Number to title/author/year/publisher/ISBN/ASIN"
method: GET
path: "/api/lccn/{lccn}"
tags: ["identification"]
---

# Resolve a Library of Congress Catalog Card Number to title/author/year/publisher/ISBN/ASIN

`GET /api/lccn/{lccn}`

## Request

- Base URL: `https://newmexicoliteracyproject.org`
- URL: `https://newmexicoliteracyproject.org/api/lccn/{lccn}`
- Auth: none declared

Lenient input: dashes/spaces optional ('63-12345', '6312345', 'sa 64-9056'). Print-book ASIN equals ISBN-10. Backed by 20.9M records (LoC bulk + Open Library + live SRU harvest).

## Path parameters

- `lccn` string, required

## Response `200`

{lccn,title,author,year,publisher,isbn10,isbn13,asin,source}

## Other responses

- `404`: Structured absence with per-index stats.

---

[API](https://skmtc.dev/newmexicoliteracyproject/apis/new-mexico-literacy-project-public-api.md) · [All operations](https://skmtc.dev/newmexicoliteracyproject/apis/new-mexico-literacy-project-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/newmexicoliteracyproject/apis/new-mexico-literacy-project-public-api/revisions/a26a5b8e4177?raw)