Estate, mining and other records,
- Plas Machynlleth MSS & Docs.
- Is-fonds
- [1601x1923].
A book of legal precedents, [17th cent.], rentals and other records of the Plas Machynlleth estate, 1843-1921, and records of lead-mining companies, 1865-1923.
Dangos 2 canlyniad
Disgrifiad archifol- Londonderry Collection.
- Is-fonds
- 1604-1849.
Records of the Welsh estates of the marquesses of Londonderry, mostly in the Machynlleth area. Further details regarding the contents of each bundle (including dates, names of parties, and type of deed or document) are available in the typescript schedule of the Londonderry Collection held at NLW. Items within each bundle have not been numbered.