How to Use the Library of Congress for Historical Research
The Library of Congress holds over 170 million items — maps, manuscripts, newspapers, photographs, sound recordings, and printed materials. Much of this collection is accessible digitally, for free, from anywhere in the world.
What Are the Key Collections for Researchers?
What Are Some Tips for Effective LOC Research?
- • Use the catalog (catalog.loc.gov) — Search by keyword, subject, author, or date range
- • Browse finding aids — Manuscript collections have detailed inventories listing every folder and item
- • Download high-res images — Most digital items can be downloaded at full resolution for research use
- • Ask a Librarian — LOC reference librarians respond to email inquiries and can guide your research remotely
- • Visit in person — Reader cards are free and grant access to reading rooms and unrestricted collections
Put LOC Research Into Practice
The Treasure Hunter's Research Guide teaches you how to effectively use LOC and other archives as part of a complete research methodology.
Get the Research Guide →