The complete Abraham Lincoln Papers at the Library of Congress consists of approximately 20,000 documents.

Historic American newspapers selected and contributed by state partners in the National Digital Newspaper Program.

The papers of James K. Polk (1795-1849), governor of Tennessee, representative from Tennessee, Speaker of the House of Representatives, and eleventh president of the United States, contain approximately 20,500 items dating from 1775 to 1891, with the bulk falling in the period 1830-1849.

The Printed Ephemera collection comprises 28,000 primary-source items dating from the seventeenth century to the present and encompasses key events and eras in American history.

This is a growing collection of selected books and other materials from the Library of Congress General Collections that can be made openly available. Most of the materials in this collection were published in the United States and are in English. The collection features thousands of works of fiction, including books intended for children, young adults, and other audiences. There are also some materials in foreign languages that were published in other countries. The materials in this collection can be read online or downloaded.