The Capitol Hill Restoration Society has been fighting to preserve and maintain the neighborhood's historic character since 1955, and its annual House and Garden Tour is one of the highlights of the year. Among other resources on their website, an extraordinary collection appears on the "House Tour Brochures" page, which includes links to both Excel and .pdf files listing all the houses included in the annual tour since it began in 1958. The page also includes links to a complete set of house tour brochures.
Congressional Cemetery, resting place of John Philip Sousa and many other figures from our neighborhood's past, is maintained and interpreted by a very active organization of community volunteers, the Association for the Preservation of Historic Congressional Cemetery. A function that allows a search of obituaries and internment records for people buried at the Cemetery is particularly useful for historical and genealogical research.
The Martin Luther King Jr. Memorial Library, main branch of the D.C. Public Library has a large "Washingtoniana" section filled with old photos, maps and other historical resources. While the building is closed for complete renovation, the collection is available at 4340 Connecticut Avenue NW.
Hill Center at the Old Naval Hospital officially began operating as a neighborhood center in November, 2011. Their website includes the history of the building, which was completed in 1866.
The Hill Rag monthly community newpaper frequently runs features on the neighborhood's history and heritage. Archives for the Rag are stored online along with those for other Capital Community News publications.
The Historical Society of Washington, D.C., has an extensive collection of maps, images, publications and other material relating to the history of our city. Since 1894 it has been sharing that history through programs, exhibits, publications and research at its Kiplinger Research Library in the historic Carnegie Library on Mt. Vernon Square (scheduled to reopen in 2019).
Navigate the map on the HistoryQuest DC site to view information about the builder, architect, original owner and year of construction of most DC historic homes. Note that, with a few exceptions, houses built before 1874 are listed with a default construction date of 1874, because were no building permits exist from before that date.
The Marine Barracks at 8th and I Streets SE is the oldest active post in the Marine Corps, founded by President Thomas Jefferson in 1801. Members of the Marine Band who work from that location lead the annual Capitol Hill Fourth of July parade.
Naval Lodge #4, which was founded in 1805 by officers and workers at the Navy Yard, has played a major role in the history of Capitol Hill. Its wonderful Egyptian Revival style meeting hall at 330 Pennsylvania Avenue S.E. served as the site of the Overbeck History Lectures for the first 13 years of the series, from 2002 to the Spring of 2015.
The Sewall-Belmont House at the corner of 2nd and Constitution is one of the oldest houses on Capitol Hill and home to the National Woman's Party. Its collection includes thousands of historic photographs, books, papers, furniture and art, much of it relating to Hill history.
The United States Capitol Historical Society was founded in 1962, "chartered by Congress to educate the public on the history and heritage of the U.S. Capitol, its institutions and the people who have served therein."
The Washington Navy Yard at the foot of 8th Street S.E. is the U.S. Navy's oldest shore establishment, dating from 1799. Originally a shipbuilding center, then an ordnance plant, it was the biggest employer in our community for about a century and a half.
Wymer's DC website consists of an interactive map that places many of John P. Wymer's 4000 historic images from 1948-1952 onto Google Street View. The photographs represent Wymer's comprehensive photograph collection of the city matched to the current view at the same locations. The website provides information about Wymer and how his collection became the property of the Historical Society of Washington.