When the Telephone Reference Service ends, service is continued by Night Owl, Maryland's late-night telephone reference service. To reach Night Owl, call 410-396-3557 in Baltimore and and toll free 1-800-325-6483 elsewhere in Maryland. The hours for Night Owl are

Monday, Tuesday, Wednesday, 8:00 to 11:00 p.m
Thursday and Friday, 5:00 p.m to 11:00 p.m.

The Night Owl staff use their expert skills to answer your questions. The broad collection of resources used by the Telephone Reference Service librarians is also used by the Night Owl librarians, including the query card file, databases, and the Internet.