The volume contains copies of cases submitted to the Board of Trade in connection with its enquiry into the Humber Conservancy: see below for a list of cases. It also includes Minutes of Proceedings, with appendices, taken before the Commission of Inquiry on the first day (29 November 1905), and the second to fourth days (6–8 February 1906). This includes a list of witnesses and an index to the Proceedings.

The following cases can be found in the volume, cases submitted by:

The Humber Conservancy Commissioners; Hull Trinity House; the Humber Pilotage Commissioners; the Humber Pilots; the Hull and Barnsley Railway Company; the Lancashire and Yorkshire Railway Company; the North Eastern Railway Company; the Great Central Railway Company; the Aire and Calder Navigation; Hull Corporation; Goole Urban District Council; Grimsby Corporation; Cleethorpes Urban District Council; Leeds Corporation; Bradford Corporation; York Corporation; Nottingham Corporation; Amalgamated Guild of Rivermen &c. of the Rivers Humber, Ouse, Trent, &c; Thomas Wilson Sons and Company Limited; Messrs E. Sisterson, G. Love, J. W. Close and S. W. Meyer; W. A. Massey and Company; Robert Skelton and Sons; the West Yorkshire Coal Owners Association; and the South Yorkshire Coal Owners Association.