D3287/122/53 | Pilbarra Asbestos Co Ltd papers | 1906 | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |
D3287/122/53-57 | Pilbarra Asbestos Co Ltd | | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |
D3287/122/54 | Pilbarra Asbestos Co Ltd papers | 1907 | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |
D3287/122/55 | Pilbarra Asbestos Co Ltd papers | 1908 | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |
D3287/122/56 | Pilbarra Asbestos Co Ltd papers | 1909-1911 | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |
D3287/122/57 | Pilbarra Asbestos Co Ltd: A report on Canadian asbestos (1905) and a printed report on the... | [early 20th cent] | Gell family of Hopton Hall, Wirksworth | Derbyshire Record Office |