An academic library is a library that is attached to a higher education institution and serves two complementary purposes: to support the curriculum and the research of the university faculty and students. It is unknown how many academic libraries there are worldwide. An academic and research portal maintained by UNESCO links to 3,785 libraries. According to the National Center for Education Statistics, there are an estimated 3,700 academic libraries in the United States. In the past, the material for class readings, intended to supplement lectures as prescribed by the instructor, has been called reserves. Previously before the electronic appliances became available, the reserves were supplied as actual books or as photocopies of appropriate journal articles. Modern academic libraries generally also provide access to electronic resources.

The George Peabody Library is a library connected to the Johns Hopkins University, focused on research into the 19th century. It was formerly the Library of the Peabody Institute of music in the City of Baltimore, and is located on the Peabody campus at West Mount Vernon Place in the Mount Vernon-Belvedere historic cultural neighborhood north of downtown Baltimore, Maryland. The collections are available for use by the general public, in keeping with the Baltimorean merchant and philanthropist George Peabody's goal to create a library "for the free use of all persons who desire to consult it".