London Wiki

Barking was a local government district in south west Essex, England from 1882 to 1965. It included the town of Barking, eastern Beckton and the south western part of the Becontree estate. The district was within the Metropolitan Police District and experienced a steady increase in population during its existence. It now forms the western part of the London Borough of Barking and Dagenham in Greater London.

The Wikipedia page is [1].

Details of some archives here [2] and the AIM25 page here [3].

See also List of Mayors of Barking