Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Secretary's Office: General Administration > Humber Conservancy Board: Rules and Byelaws > Humber Conservancy Board, River Humber: Plan shewing Areas in which Anchorage is Permissible under the draft Public Traffic Regulations for the Humber