The Rock Creek Railway was one of the first electric streetcar companies in Washington, D.C., and the first to extend into Maryland. It was incorporated in 1888, started operations in 1890, and by 1892 ran some five miles from the Cardoza/Shaw neighborhood of D.C. to Chevy Chase Lake, Maryland. On September 21, 1895, Rock Creek Railway purchased the Washington and Georgetown Railroad Company and the two formed the Capital Traction Company.