Olmstead, J. F. Chittenden, George B. cartographic Maps. lcgft https://id.loc.gov/authorities/genreForms/gf2011026387 [Washington, D.C.? : s.n., 187-?] eng Cadastral map showing lot and block numbers. Covers area bounded by Potomac River, Rock Creek, 13th St. N.W., and Constitution Av. N.W. Relief shown by contours and gradient tints. Also shows fire-alarm boxes and hydrants. In upper margin: Sheet No. I. Includes "Table showing the width of the streets [and] avenues." LC copy fold-lined, shellacked, missing small sections, halved, mounted on cloth backing, annotated in red ink to identify contours, and annotated in black ink in right lower margin: Colored at the office of Geo. B. Chittenden ... Corcoran Bldg. Real property--Washington (D.C.)--Maps. Fire alarms--Washington (D.C.)--Maps. Hydrants--Washington (D.C.)--Maps. Washington (D.C.)--Maps. United States District of Columbia Washington. Available also through the Library of Congress Web site as a raster image. http://hdl.loc.gov/loc.gmd/g3850.ct004394