The file consists of correspondence between the Engineer to the Humber Conservancy Board (Arthur Ernest Butterfield) and the Engineer to the Aire and Calder Navigation at Leeds on the subject of the Yokefleet Reach Left Bank Training Wall on the River Ouse. In particular, discussion surrounding discrepancies over the amount of land required for the Wall.

Two additional files can also be found within. One being correspondence regarding the defined limits of the Port of Hull and the other being private and confidential lists showing holiday leave granted to officers and servants of the Board. The latter includes details of staff salaries and their leave per annum.