LDGSL/857/5
Sketches of the Standard Quarry, Welshpool
[1834-1838]
LDGSL/857/5/1
Sketch of the Standard Quarry, Welshpool
LDGSL/857/5/2
Sketch of the Standard Quarries, Welshpool
LDGSL/857/5/4
Sketch of the trap dyke, Standard Quarries, Welshpool
LDGSL/857/5/5
Sketch, possibly of the Standard Quarry