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Notice: All Library of Congress Reading Rooms will operate on a delayed schedule Wednesday, February 12, 2025, opening at 10:30 a.m.

Research Centers

Hours for Research

All research centers are open Monday-Friday, 8:30am-5:00pm. Evening and Saturday hours vary by research center. All research centers are closed on Sundays and Federal Holidays.

All research centers are open to walk-in researchers. Appointments are not required but may be helpful to ensure material is accessible during your research visit. See the Researcher Scheduling page for more information.

Location

Library of Congress
Thomas Jefferson Building
10 First Street SE
Washington, DC 20540
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Hours

All research centers are open Monday-Friday, 8:30am-5:00pm. Evening and Saturday hours vary by research center. All research centers are closed on Sundays and Federal Holidays.