SPRINGFIELD, Ill. (AP) — A treasure trove of more than 130 books once owned by a renowned Abraham Lincoln biographer has been donated to the Abraham Lincoln Presidential Library and Museum in Springfield.

Benjamin Thomas’ books could be a gold mine for Lincoln scholars as many of the works contain the author’s handwritten comments, observances and notations.

READ MORE: Illinois COVID-19: State Reports 1,248 More Cases, 24 Additional Deaths

The books were donated by the Lincoln Land Community College Library. Thomas’ widow gave the books to the school’s library before her death in 1999.

READ MORE: Two Chicago Police Officers Shot On South Lawndale Released From Hospital

The State Journal-Register reports that the museum’s chief of acquisitions Ian Hunt accepted the collection this week during a ceremony at the school.

Thomas lived in Springfield from 1932 until his death in 1956. His works include “Abraham Lincoln: A Biography” and “Lincoln’s New Salem.”

MORE NEWS: 13-Year-Old Boy Riding Bicycle Critically Wounded In Shooting

(© Copyright 2019 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)