The RDCs were established in 1898 and functioned from the following year, taking over a number of functions from the Boards of Guardians, including roads, housing and sanitary services. They were abolished in 1925.
Most of the collection has now been digitised and can be freely downloaded here. The remaining material, which includes the 1899 to 1915 Books for the RDCs of Ballyshannon, Donegal, Milford and Strabane, should be available in the Digital Archive by the end of this year.