Map of Washington DC from 1792,

Johnson's Georgetown and the city of Washington historic survey : the capital of the United States of America / by Johnson and Ward.

Plan of the city intended for the permanent seat of the government of t[he] United States : projected agreeable to the direction of the President of the United States, in pursuance of an act of Congress passed the sixteenth day of July, MDCCXC, "establishing the permanent seat on the bank of the Potowmac" : [Washington D.C.] / by Peter Charles L'Enfant.

Plan of the city of Washington in the territory of Columbia : ceded by the states of Virginia and Maryland to the United States of America, and by them established as the seat of their government, after the year MDCCC / engrav'd by Sam'l Hill, Boston ; in order to execute this plan, Mr. Ellicott drew a true meridional line.

L'Enfant Plan of Washington. The dataset contains polygons representing the L'Enfant Plan historic district, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. This district was identified from public records, including published maps and the National Register nomination form. It was created by buffering along the planimetric street centerline at specified distances, as referenced in the 1803 King Plats, ranging from 70 to 160 feet.

Topography of the federal city, 1791 : [Washington D.C.] / by Don A. Hawkins, Washington, D.C.

Plan of the city of Washington from 1800.

Exhibit chart showing streets & avenues of the cities of Washington and Georgetown, improved under the Board of Public Works, D.C. : Nov. 1st 1873

,This application, HistoryQuest DC, is an interactive GIS map that provides historical data on approximately 193,000 extant buildings in Washington, D.C. The map offers several operational layers of information for the user including historic data on individual buildings and historic districts, links to documentation on properties listed in the National Register of Historic Places, information on historic residential subdivisions, and the identification and boundaries of the L’Enfant Plan, and the city’s Squares, and Wards. The featured layer in the map—the Historical Data on DC Buildings—provides information from a variety of sources on original dates of construction, architects, owners and builders of the city’s historic buildings. The application also includes a Query tool that allows the user to analyze the historic data within a specified geographic area or city-wide.This application has evolved out of the DC Historical Building Permits Database, begun in 2002, is on-going. Requests to correct or add new information can be made using the “Propose Data Change” drop-down form located on the banner at the top of the map.,,For questions or concerns, contact the Historic Preservation Office at historic.preservation@dc.gov.,,

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