Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Quarries and quarrying -- Wales -- Bethesda -- Records and correspondence, 1 canlyniadau
- Quarries and quarrying -- Wales -- Bethesda -- Accounting, 1 canlyniadau
- Slate industry -- Wales -- Bethesda -- Records and correspondence, 1 canlyniadau
- Slate industry -- Wales -- Bethesda -- Accounting, 1 canlyniadau
- Quarries and quarrying -- Wales -- Bethesda -- Employees -- Salaries, etc., 1 canlyniadau
- Slate industry -- Wales -- Bethesda -- Employees -- Salaries, etc., 1 canlyniadau
- Domestics -- Wales -- Bethesda -- Salaries, etc., 1 canlyniadau
- Unskilled labor -- Wales -- Bethesda -- Salaries, etc., 1 canlyniadau
- Schools -- Wales -- Anglesey., 1 canlyniadau
- Cae Braich y Cafn (Quarry : Wales) -- Records and correspondence, 1 canlyniadau
