people. 1867: The South Carolina Railroad vs. the Columbia and Augusta Railroad (later the Charlotte, Columbia and Augusta Railroad). A grade crossing in Columbia was protested in court, then blocked by a parked train, then physically torn up and finally threatened by a steamed-up locomotive ready to move forward to block at any moment (Derrick: 245-246 and Fetters: 143). 1870s: The Denver & Rio Grande Western Railroad vs. the Atchison, Topeka & Santa Fe Railway vs. the Union Pacific. All three railroads contested one another for access through suitable mountain passes in Colorado. January 1870: Central Pacific Railroad vs. California Pacific Railroad. After Central Pacific blocked California Pacific from entering the city of Sacramento, California, the Supreme Court of California ordered otherwise. December 2, 1870–January 9, 1871: The Erie Railroad vs. the Morris & Essex Railroad's Boonton Branch (Delaware, Lackawanna and Western Railroad) at the west end of the Erie's Long Dock Tunnel in Jersey City, New Jersey. January 6 and January 7, 1876: The Mercer & Somerset Railway (Pennsylvania Railroad) vs. the Delaware and Bound Brook Railroad (Reading Railroad) in Hopewell, New Jersey. August 7–September 13, 1883: The Southern Pacific vs. the California Southern Railroad (a subsidiary of the Atchison, Topeka & Santa Fe Railway) at Colton Crossing in Colton, California (just outside San Bernardino). March 1886: The Erie Railroad vs. the New Jersey Junction Railroad (New York Central Railroad) at King's Bluff near Weehawken, New Jersey. September 1891: The Central Railroad of New Jersey vs. the Jersey City, Newark and Western Railway (Lehigh Valley Railroad) in southern Jersey City, New Jersey. March 1894: The Cape May and Millville Railroad (Pennsylvania Railroad) vs. the Tuckahoe and Cape May Railroad (Reading Railroad) at Woodbine Junction, New Jersey. 1897: The Pennsylvania Railroad vs. the New Jersey Junction Connecting Railway (Lehigh Valley Railroad) in Jersey City, New Jersey. December 1897: The Pennsylvania Railroad vs. the Newtown Electric Street Railway in Langhorne, Pennsylvania. This was not technically a frog war (since no grade crossing was involved), but the PRR opposed attempts to build a line through a turnpike underpass running underneath the PRR tracks. Passengers had to disembark on each side of the PRR and walk through the underpass to meet connecting trolleys. United Kingdom Battle of Havant: Conflict between the London & South Western Railway and the London, Brighton & South Coast Railway over the building of the Portsmouth branch. Nickey Line