Family and estate: Adams (Holyland); Allen (Cresselly); Allen-Mirehouse (Angle); Carew (Carew Castle); Gwynne (Cwrt); Harcourt Powell (Greenhill and Lamphey Court); Harries (Priskilly); Higgon (Scolton); Lewis (Henllan); Lloyd-Philipps (Dale Castle); Lort-Phillips (Lawrenny); Mathias (Llangwarran and Lamphey Court), Meyrick (Bush); Saunders Davies (Pentre); Stokes (St Botolph); Tasker (Upton Castle). These contain title deeds, rentals and maps from 16th - 20th centuries, also personal papers, diaries, correspondence etc. 18th - 20th centuries.
Business: Milford Docks Company records 1874 - 1992; files and papers of J Roch, estate agents of Pembroke 1914 - 1961; papers of R K Lucas, estate agents of Haverfordwest c.1810 - 1980s; papers of Messrs. Pritchard Read and Company, accountants, Haverfordwest 1920s - 1960s; records relating to Porthgain Quarries 20th century (access with owner's permission only); records of the Pembrokeshire Building Society 19th - 20th centuries; Saundersfoot Railway and Harbour Company records 1828 - 1933; many smaller collections including papers about coalmining at Hook, Saundersfoot, Nolton and Roch, 19th - 20th centuries, and account books, ledgers and correspondence of smaller businesses and tradesmen 18th - 20th centuries.
Solicitors: records of the firms of R T P Williams Haverfordwest and Milford branches; Eaton Evans and Williams of Haverfordwest; Lowless and Lowless of Pembroke and Pembroke Dock; Walter Williams and Sons of Fishguard; Lewis and James of Narberth; Price and Kelway of Milford (access with firm's permission only), Messrs. Johns and Pepper of Fishguard; Penhale and Company, formerly Philipps Williams and Company of Haverfordwest; Williams and Roberts (formerly of Narberth, now of Whitland); V J G Johns of Fishguard: these include office and agency papers which can include deeds, estate papers, probate papers and accounts. Many large estates are covered, including Picton Castle, Bush, Cresselly and Orielton, also Haverfordwest Borough and various businesses and charities 16th - 20th centuries.
Newspapers: Western Telegraph 1854 - date, with some gaps; West Wales Guardian 1869 - date, with some gaps; various copies of other papers including the Pembrokeshire Herald, the County Echo, the Tenby Observer, News in a Nutshell; various papurau bro (local newspapers) c.1974 - date.
Miscellaneous: a wide variety of smaller collections of documents, volumes, postcards and photographs covering a large number of different topics (such as wartime diaries and logbooks, minutes of local societies, political parties and sports organisations, architectural drawings from 18th century and meteorological data of 19th and 20th centuries) but including the following notable collections, minutes, annual reports and pamphlets of NALGO 1936 - 1975; minutes, correspondence and files of the NFU (some items closed for up to 50 years) 1917 - 1977; minutes, scrapbooks, correspondence and accounts of several Women's Institutes, 20th century; aerial photographs of most of Pembrokeshire taken c.1956 - 1958, Ordnance Survey Maps, 1", 6", 25" scales, 1819-1964.