We are responsible for collecting and preserving documents relating to the history of the county.
To find out about all the documents we hold you can search the DRO Database which gives you access to the catalogues of all the documents we hold and the opportunity to view about 30,000 of our photographs, including the Durham Light Infantry photographs digitised during the Image of the Soldier project.
To find out about collieries in the Durham coalfield, go to the Durham Collieries database.