Correspondence, 1854, relating to sanitation at Portmadoc and Tremadoc.

Papers relating to the establishment of a Porthmadog (Harbour) Trust, 1913-1920, and a ship building project, 1917-1918.

A letter dated 28 April 1925 from J. Rhosydd Williams, Rhosllannerchrugog to Sir John Ballinger (1860-1933), first librarian of the National Library of Wales, containing information about William Jones, chandler, Porthmadog, who founded a Church of Christ at Porthmadog, and also particulars about the Scottish Baptists church at Criccieth and about Dr W. Jones Williams, Middlesborough.

The second of two volumes containing a record kept by Robert Jones, 4 Garth Terrace, Portmadoc of the texts of sermons preached by Calvinistic Methodist preachers, possibly at Portmadoc, 1853-1890.

A typescript dissertation on 'The History of Traeth Mawr and the Industrial Results of the Formation of the Embankment', by William Morgan Richards, Portmadoc, 1925.

The first of two volumes containing a record kept by Robert Jones, 4 Garth Terrace, Portmadoc of the texts of sermons preached by Calvinistic Methodist preachers, possibly at Portmadoc, 1853-1890.

Papers relating to the campaign to prevent the closure of the Cambrian Coast line and for improvements to the the infrastructure of the line and train services. The files include correspondence with supporters, British Rail, Members of Parliament, local authorities and government departments, minutes of meetings, publicity material, press coverage, reports, statistical and financial information, papers relating to television and press coverage.