Where can I get reference help?
The Information Desk is staffed by library personnel who are available to answer questions Monday - Friday 8 a.m. - 4:30 p.m. The telephone number is 301-443-2673.
You may also use our AskUs Live! service that allows you to chat with a librarian online. (Available Monday - Friday, 1 p.m. - 4 p.m. excluding federal holidays).
Submit your reference question.
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