Official site has general information on services and locations, calendar of events, online catalog, and access to commercial databases containing articles from periodicals and other reference sources (library card required for access to databases) Includes descriptions of specialized collections (especially the extensive Washingtoniana collection), resource guides, subject bibliographies and recommended web links.

Non-profit group seeking to strengthen public and private support for DC public libraries in order to reverse their decline. Has news, background facts, and information on how to help.

Non-profit organization supports and enhances DC Public Library programs and services.

Research library and museum with important collections in Byzantine studies, pre-Columbian studies, and landscape architecture. Includes online catalog, collection overviews, general information for visitors, and lists of conferences and publications, some of which are free to download [PDF]

Home to the world’s largest collection of Shakespeare’s printed works, as well as other rare Renaissance books and manuscripts. Includes information for visitors and readers, online catalog, collection descriptions, calendar of events, online shopping, listings for exhibitions, performances and programs (including performances at the Elizabethan-style Folger Theatre), and a learning page for kids.

Local chapter of the American Association of Law Libraries. Has information about the organization, its activities, events and membership, job listings, and access to the chapter's listserv.

Masonic library (Scottish Rite). Includes description of the library and museum collections.

Has extensive collections relating to Latin America and the Caribbean and is the official depository for all OAS official records and technical publications. Includes searchable online catalog and information about the library, its services and its collections.

A system of 20 specialized Smithsonian research libraries in the fields of science, technology, the arts, and American studies. Includes online catalog of the combined collections and overview of each library. A virtual library provides views of exhibitions, reprints of classic texts, library publications, lectures, and bibliographies.

Resource-sharing organization established by university libraries in the metropolitan area. Describes its programs, including the ALADIN online catalog and information system.