A book of sheep earmarks for the parishes of Llandrillo, Llandderfel, Pennant, Llanfor, Llangower, Llanymawddwy, Llangynog, Hirnant, Llanwddyn, Llanfyllin, Llanarmon, Llanrha[e]adr[-ym-Mochnant], Llansilin and Llanfihangel, 1845.

A manuscript containing sermons preached at various places in Denbighshire, Flintshire, Montgomeryshire and Caernarvonshire.

Rules and rituals of the Ancient Order of Foresters, 1853-1939, including Court Powis rule books, 1853-1936, and a Montgomeryshire District Branch rule book.

A steward's account book of Newtown (Montgomeryshire) Wesleyan Circuit for the period 1830-1867. The accounts are almost entirely in the form of statements of receipts and disbursements in respect of successive quarterly meetings. Insets in the volume include a receipt, [18]48, from Thos. Kempster, Welsh Pool, to the Newtown Circuit for the payment of £31.3s. in settlement of a claim; statements of prospective income and present income, 1866; and a holograph letter from Jno. Davies, Newtown, circuit steward, to the Reverend Chas. Prest, Islington, London, and a reply, 1866 (the division of the circuit and the possibility of a grant towards the support of ministers at Newtown and Welshpool).

A music book inscribed E. Mills [?Montgomeryshire] Bandmaster's book from David his son, containing marches, waltzes, glees, etc. Included in the collection are Montgomeryshire Slow March, Montgomeryshire Lasses or The Heroes of Salamanca, Brecknockshire March, Montgomery Militia, Montgomeryshire Yeomanry, Cwn Sq. Lewis Nantgwillt, as well as several of the better known Welsh airs.

A manuscript containing a terrier of lands, 1616, in Cheshire, Flintshire, Montgomeryshire and Denbighshire, together with memoranda involving money owing and lent, etc.

'Scrapiana', or cuttings from newspapers, both Welsh and English, collected by Charles Ashton. The cuttings, ranging from 1884 to 1890, are from Y Dydd, Gwalia, Cambrian News, Liverpool Daily Post, Tit-bits, Y Drych, The Welsh Farmers' Gazette, Liverpool Weekly Mercury, Wellington Journal, Y Llan, Oswestry Advertizer, and the Montgomeryshire Express.

Copi o draethawd a gyflwynwyd ar gyfer gradd MA gan Lona Jones (née Gwilym) yn dwyn y teitl 'Traddodiad barddol Maldwyn yn y ddeunawfed ganrif', Prifysgol Cymru Aberystwyth, 1983.

A manuscript containing copies of titlings for writs of covenant, entries of fines levied and recoveries suffered at courts of Great Sessions for Montgomeryshire and Denbighshire, 1799-1806.

Papers, 1839-1931, relating to the Naylor family and the Leighton Hall and Brynllywarch estates, comprising accounts, rent schedules, valuations and sale catalogues, together with correspondence and other material relating to the family, and in particular to their activities as high sheriffs for Montgomeryshire.

Additional papers were received in July 2021, this material mainly comprising correspondence and newspaper cuttings, which trace the history of and events within the Naylor family and the Leighton Hall estate from the mid-nineteenth century to the near present day. The material includes a memorandum book, 1848-1856, belonging to John Naylor (1813-1889) of Leighton Hall.

Papers of C. R. Jones, Llanfyllin, treasurer of the Montgomeryshire Congregational weak churches fund, etc., including receipts and letters in respect of grants made to the churches and a bank pass book relating to the Congregational County fund, 1872-1879.

The series comprises a farming wages book containing details of farming wages paid with some additional memoranda, including details of orchards planted in 1919 by Josef Straeton, a German prisoner of war.

A photostat facsimile of a register of clocks and dial plates made by Samuel Roberts, Llanfair Caereinion, Montgomeryshire, 1755-1774, with specifications, prices and names of buyers.

Extracts from State Papers, temp. Elizabeth.

The file comprises correspondence and papers relating to the restoration of the Montgomeryshire Canal and its subsequent operation. Many of the papers concern the proceedings of the Montgomery Waterway Restoration Group of the Prince of Wales Committee.

The group comprises documentation concerning the sale of land in Llansanffraid-ym-Mechain, 1754.

Many of the papers relate to the Powell's Row Improvement Scheme.

The series comprises circulars, fact sheets, pamphlets and correspondence concerning the Montgomeryshire Flora Project, 1984-1994, and the Montgomeryshire Canal Conservation Project, 1988-1989, together with postcards from Penny Condry to NLW reporting the successful outcome of conservation measures in Cwm Einion and the Dyfi marshes initiated by her late husband, 1998.

'Clustnodwr neu Lyfr Clustnodau Defaid', being a volume containing diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llangynog, Pennant Melangell, Llanrhaiadr ym Mochnant, Llanwddyn and Hirnant in Montgomeryshire, Llandrillo, Llanfor, Llandderfel and Llangower in Merioneth and Llangwm in Denbighshire, 1827.

An entry book, 1783-1798, of fees collected by the Reverend John Rocke on the passing of fines and recoveries in the Denbighshire and Montgomeryshire circuit of the Court of Great Sessions.