Old Isisford District Hospital
Starting in 1948 and continuing into the 1950s, extensions were made to Isisford Hospital including: a kitchen, operating theatre and an extension to one of the 1892 buildings. Blackall Hospitals Board was advised by the Department of Health and Home Affairs that its plan for remodelling the Isisford Hospital had been approved; there was also approval for installation of an X-ray plant at Isisford.
Porthmadog
Ynyscynhaiarn was a civil parish in the "cantref" of Eifionydd. In 1858 a local board of health was established under the provisions of the Public Health Act 1848, and from 1889 this formed a second tier of local government in Caernarfonshire. Under the Local Government Act 1894 the local board became an urban district, which by 1902 had changed its name to Portmadoc. In 1934 part of the area was transferred to Dolbenmaen, and a smaller area was taken in from Treflys, which had been abolished. Porthmadog Urban District was abolished in 1974, and the town became part of "Dwyfor District" in the new county of Gwynedd, though it retained limited powers as a community. Dwyfor itself was abolished when Gwynedd became a unitary authority in 1996.