The file consists of of correspondence between the Engineer to the Humber Conservancy Board (Arthur Ernest Butterfield) and the Board's Lighthouse Keepers (including prospective new Lighthouse Keepers), the District Agent for the London and North Eastern Railway, and Messrs. Chance Brothers and Company Limited (Smethwick). The subject matter is the maintenance and continued operation of the Saltend Lighthouses, as well as the maintenance of the Lightkeeper cottage and embankments. This includes complaints from the Lighthouse Keepers concerning the extremely poor condition of the cottage, its footpath, and the state of the embankment.

Specifications for the maintenance work required for the Cottage can be found within the file. It also records details of the time clock and the electrical consumption of the Lighthouses.