sentences:  The Horsecar, which these lines originally operated on, were eventually replaced by electric streetcars between the years of 1896 and 1900.Route 40 operated all the way between the Mount Pleasant neighborhood and Seat Pleasant, Maryland, via Downtown Washington DC, and route 42 operated between Mount Pleasant and the Kingman Park neighborhood.Both routes began at Mount Pleasant and ran to H Street, turning east there, south on 14th Street NW, and east on F Street NW along the F Street Line.