The folder consists of documentation and statistics compiled by the Humber Conservancy Board in order to make its case against the Humber Bridge Bill. It contains sixteen booklets with the following titles:

1. Collisions with floating marks. Lower Humber. From 1 January 1928 to 30 April 1932.

2. Particulars relating to height of wires across River Trent.

3. Particulars of vessels (foreign and coastwise) proceeding up Humber to Goole during month of July in years 1910, 1920 an 1930.

4. Précis of proceedings relating to works for improvement of Humber.

5. Proposed tunnel under Humber, 1873.

6. Proposed tunnel under Humber, 1884.

7. Proposals to construct floating landing stage at Victoria Pier.

8. River Craft registered in 1931.

9. Statements shewing tonnages and lengths of largest vessels proceeding from sea to Goole: a. 1931 b. 1929–1930 c. 1919–1928

10. Ship measurements.

11. Statement of London barges and other sailing vessels which passed site of proposed bridge under 1931.

12. Statement giving particulars regarding: R. G. Anderson, A. E. Waterhouse, S. Rainforth, J. W. Osburn, and H. W. Ayre | Also statement shewing number of ships piloted over site of bridge during 1930.

13. Statement shewing particulars and net register tonnage of sea-going vessels navigating Humber above Hull (Inwards and Outwards) 1908–1931.

14. Tables A, B, C, D.

15. Thames Barges.

16. Statement shewing particulars of River Craft on which registration dues were paid, 1908–1931.