Records of Aberystwyth borough, including court leet records, 1693-1882; burgess rolls, 1782-1882, including records of the Improvement Commissioners, 1835-1873; entry books of notices, 1835-1882, draft minute books, 1873-1890, treasurer's books, 1874-1897, minute books, 1883-1917; harbour records, 1780-1906; Aberystwyth Burial Board records, 1857-1927; Aberystwyth public library account books, 1874-1913; statutory registers of licences for hackney carriages, 1887-1909, 1906-1926; licences of slaughterhouses, 1873-1879.

The catalogue has not yet been transferred to the online catalogue. Please see the hard copy of the catalogue, available on the open shelves at the National Library of Wales.

Bound volume endorsed 'Aberystwyth Harbour Book, 1805' containing accounts, 1805-1807, of the sums paid to workmen who were responsible for the building of the pier at Aberystwyth, including labourers, joiners, smiths etc.

Crew accounts and agreements (generally known as crew lists) and logbooks, together with associated papers and correspondence, 1856-1914, for vessels registered at the port of Aberystwyth, Cardiganshire.