Excerpt from Annual Report of the Commissioners of the District of Columbia, Year Ended June 30, 1917, Vol. 2: Engineer Department Reports Asphalt, sheet, speci

Excerpt from Annual Report of the Commissioners of the District of Columbia, Year Ended June 30, 1910, Vol. 1: Report of Commissioners, Miscellaneous Report Pol

Excerpt from Annual Report of the Commissioners of the District of Columbia Year Ended June 30, 1916, Vol. 4: Report of the Board of Education With the opening