Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Parliamentary Bills and Provisional Orders: Representations to Parliament, or the Board of Trade, by the Humber Conservancy Commissioners > Humber Conservancy and Kingston upon Hull Docks Bill—Session 1852 > Abstract of Deed of Covenant of 26 June 1850 for cleansing the Old Harbour