Records of Humber Conservancy and the Humber Ports (Records deposited by Associated British Ports and its Predecessors) > Humber Conservancy > Representations to Parliament by the Humber Conservancy Board > Humber Bridge Bill—Session 1931 > Humber Conservancy Board: Humber Bridge Bill Session 1931: Copies of charts of the Humber from 1684 to 1930