The proposals were published to convince transit officials that the 19-mile system authorized by Congress within the city - part of a 25-mile network extending into the suburbs -would be inadequate by 1985.
These haunting 1967 photos show the inside and outside of the old Capitol Traction Company Powerhouse, previously located on the Georgetown waterfront.
This most incredible image shows what the Ulysses Grant Memorial Bridge would have liked like today. It would have been where the current Arlington Memorial Bridge is today.
Learn the fascinating story of how Reno Road in North Cleveland Park almost became Washington Avenue in honor of the west coast state. Find out why the proposal was opposed by Senator Howard Cannon of Nevada.