author: united states congress house committee on the district of columbia subcommittee appointed to investigate affairs of the district of columbia

District of Columbia Investigation: Hearings Before the Subcommittee of the Committee on the District of Columbia, House of Representatives ... Appointed to Investigate Affairs of the District of Columbia

United States. Congress. House. Committee on the District of Columbia. Subcommittee Appointed to Investigate Affairs of the District of Columbia

Washington (D.C.)

... switch and auxiliary switches . Five - faced adjustable traffic signals ... automatic control switch and auxiliary switches . Five - faced adjustable ... transfer switch . Independent combined manual and automatic control switch ...