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: The Humber Rules, The Trent Rules, and The Humber Byelaws 1910, also The Humber (Amendment) Rules, 1924 (Buoying and Marking of Wrecks)