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Research and Reference Services

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Notice: Appointments are required for entry into Library facilities, and everyone must follow the health and safety protocols established by the Library, in consultation with public health professionals (Most of these protocols are mandatory, regardless of vaccination status). Library users do not need to make an appointment to obtain or renew a Reader Card. However, users must obtain a time-ticketed pass or reading room appointment (if applicable) to come onsite to complete their reader card registration. For additional instructions, see the Pandemic Information for Researchers page.

Effect of weather delays on Library of Congress hours: If the federal government announces a closure or delay for federal agencies in Washington DC for any reason, the Library of Congress’s hours for visitors and researchers will follow the same schedule.  For example, if a delay of two hours is announced for federal agencies, the Library of Congress will open two hours later than posted public hours (see below). If federal agencies in Washington DC close for the day, the Library will not open to the visitors or researchers on that day.

Building Abbreviations and Codes:
LA = Adams Building | LJ = Jefferson Building | LM = Madison Building | § By appointment only

Reading Room / Reference Center Monday-Friday Saturday
African & Middle Eastern (LJ 220) §9:30a-12:30p; 1:00-4:00p Closed
Asian (LJ 150) § 9:30a-12:30p; 1:00-4:00p Closed
Business Reference Services (LJ 100) §9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Children's Literature Center (LJ 129) §9:30a-12:30p; 1:00-4:00p Closed
Copyright Office (LM 402) 8:30a-5:00p Closed
European (LJ249) § 9:30a-12:30p; 1:00-4:00p Closed
Folklife (LJ G53) § 9:30a-12:30p; 1:00-4:00p Closed
Geography & Map (LM B01) § 9:30a-12:30p; 1:00-4:00p Closed
Hispanic (LJ 240) § 9:30a-12:30p; 1:00-4:00p Closed
Law Library (LM 242) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Local History & Genealogy Reference Services (LJ 100) §9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Main (LJ 100) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Manuscript (LM 101) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Microform and Electronic Resources Center (LJ 139) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Motion Picture & Television (LM 336) § 9:30a-12:30p; 1:00-4:00p Closed
-- Motion Picture Viewing Facilities § 9:30a-12:30p; 1:00-4:00p Closed
Newspaper & Current Periodical (LM 133) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Performing Arts (LM 113) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p
Duplication Services (LA 128) 9:00a-3:00p Closed
Prints & Photographs (LM 337) § 9:30a-12:30p; 1:00-4:00p Closed
Rare Book & Special Collections (LJ 239) § 9:30a-12:30p; 1:00-4:00p Closed
Recorded Sound Reference (LM 113) § 9:30a-12:30p; 1:00-4:00p Closed
-- Recorded Sound Listening Facilities § 9:30a-12:30p; 1:00-4:00p Closed
Science Reference Services (LJ 100) § 9:30a-12:30p; 1:00-4:00p 9:30a-12:30p; 1:00-4:00p

Requesting Closed-Stack Materials
For delivery of materials from closed stack collections, requests typically must be made at least one hour, and sometimes two hours, before the reading rooms close. Details are available in the reading rooms and on their home pages.

Reference Collections
Each reading room also has a reference collection that is openly available during reading room hours.