Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Humber Conservancy Board: Arbitration and Litigation > The Humber Conservancy Board Vs The Owners of the S.S. "Upcerne" > The Humber Conservancy Board Vs The Owners of the S.S. "Upcerne": Correspondence No. 4