doi:10.7916/d8-tw24-km42History of the work of eliminating grade crossings by the Brooklyn Grade Crossing Commission, a joint undertaking between the city of New York, the Long Island R.R. Co. and the Brooklyn Heights R.R. Co., April 30, 1918Brooklyn (New York, N.Y.). Brooklyn Grade Crossing CommissionbookstextRailroad crossings.Brooklyn (New York, N.Y.)