Bibliography of the District of Columbia - Bibliography of books, maps, newspapers and magazine articles on the subject up to 1898. Digitized full text (211 pages) of the 1900 edition from Google Books.
Boundary Stones of Washington, D.C. - Describes and locates the 40 boundary stones placed in 1791 and 1792 to demarcate the boundaries of the District of Columbia. Includes photos and interactive map.
The Capital and the Bay: Narratives of Washington and the Chesapeake Bay Region, ca. 1600-1925 - A digital library of 141 books from the collections of the Library of Congress dealing with the history of Washington and the Chesapeake Bay area of Maryland and Virginia. Search by keyword or browse by subject, author, or title. Documents are displayed in text-only or page image form.
Explore DC - An exploration of the city and its role as National Capital. Covers local history and neighborhoods, key Federal government institutions, the city's African-American heritage, U.S. Presidents, and special-interest virtual tours. Includes video and audio clips, print and online resources, and lesson plans. Produced by local PBS station WETA.
The George Washington University: Gelman Library Special Collections - Extensive collections on the history of the university and on local history. Information on the library and its holdings, which can be searched or browsed online, collection finding aids, an encyclopedia on the history of the university and its Foggy Bottom neighborhood and links to digital collections in local university libraries.
H-DC, Washington, D.C. History Network - Refereed discussion list on Washington, DC, history and culture. Has forum, book reviews, bibliographies and links to online resources.
The Seat of Government of the United States - By Joseph B. Varnum, Jr. 1854 work discusses the decision about where to locate the Federal capital and the subsequent development of Washington. Digitized full text (121 pages) of the original 1854 edition from Google Books.
Walks about Washington - By Francis E. Leupp. 1915 informal account of Washington history and sights. Digitized full text (291 pages) of the 1915 edition from Google Books. Includes drawings by Lester G. Hornby.
Washington - Article on the city from the 1911 edition of the Encyclopedia Britannica.