BW91/17/11
                                Drawings of locks
                            
                        
                            
                            Description
                                Give detailed measurements and minimum dimensions; shows details of stops, maximum size of craft, depths over sills; annotated "Navigation estimates".
                            
                        
                            
                            Date
                                1905
                            
                        
                            
                            Reference code
                                BW91/17/11
                            
                        
                            
                            Extent & medium
                                1 volume
                            
                        
                    