A seriescomprising staff and taxation records kept by the Accountant and Chief Collectors Office of the Humber Conservancy Board. These records can be divided up into three categories as follows:

1. Establishment Books [C DPD/1/3/3/10/1-4a] – Registers of employees (and pensioners) of the Humber Conservancy Board covering the entirety of the Board's existence (1908-1968).

2. Income Tax Files [C DPD/1/3/3/10/5-7] – Returns of employees (and pensioners) employed by the Humber Conservancy Board for the payment of Income Tax; survivals are patchy, but include information related to individual's place of residence not typically found in the Establishment Books.

3. A file [C DPD/1/3/3/10/8] regarding the remuneration, and terms and conditions of the Board's floating staff between 1949 and 1968.