Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Publications produced, or acquired by the Humber Conservancy Board > Notices to Mariners issued by the Humber Conservancy Board or the Naval Authorities > Notice to Mariners: Lower Humber (Laying of Dredger Moorings in the entrances and approach to the entrances of Albert and Humber Docks, Hull)