The Columbia Railway was the third streetcar company to operate in Washington, D.C. It was incorporated and started operations in 1870, running from the Treasury Building along H Street NW/NE to the city boundary at 15th Street NE. It switched to cable power in 1895 and then electric power in 1899. The company extended to Seat Pleasant, Maryland, and Kenilworth in 1898. In the late 19th Century it was purchased by the Washington Traction and Electric Company and on February 4, 1902, became a part of the Washington Railway and Electric Company.