L. Tom Perry Special Collections, special collections department of the Harold B. Lee Library in Provo, Utah, US

L. Tom Perry Special Collections is a research library at Brigham Young University housing approximately 280,000 printed items and 8,000 manuscript collections containing diaries, journals, and university records. The facility also holds around 500,000 photographs and focuses on Mormon history, Western Americana, literature, and printing arts.

The collection was relocated to a new location in 1999 within the Harold B. Lee Library after previously being housed on the fourth floor. Named after Elder L. Tom Perry of the Quorum of the Twelve Apostles, it has since grown into a major research resource for Mormon and Western American history.

The department's name honours L. Tom Perry of the Quorum of the Twelve Apostles. Its Mormon Americana Collection sought every publication about the LDS Church and all its periodicals, while early acquisitions included the Burns and Hafen collections. Staff librarian Newburn I. Butt transcribed and indexed hundreds of Mormon diaries.

Visitors should submit requests at least 30 days in advance, especially for large requests involving rare materials. Staff can assist online through email or chat, allowing questions to be answered without visiting in person.

The first archives at a Utah institution of higher learning began in 1956 in the attic of the Karl G. Maeser Building, where Ralph Hansen stored the earliest documents. Before settling on the Harold B. Lee Library's first floor in 2016, the collections passed through a locked bookcase in the head librarian's office, a small manuscript room in the Grant Library, and the storage area of the Utah Wholesale Grocery Warehouse from 1959 to 1960.