{"value"=>"<p>The Electric Traction Commission of the New York Central and Hudson River Railroad was responsible for overseeing the electrification of Grand Central Terminal and the railroad's main passenger lines into New York City. The papers include correspondence, 1902-1906, primarily between Sprague and William J. Wilgus, New York Central Vice President and Chief Engineer, minutes, reports, proposals, specifications and blueprints and photographs. This section also contains correspondence, patents, specifications and plans, blueprints and photographs, 1905-1922, concerning the Wilgus-Sprague collaboration on the third rail system created for the project.</p>"}