NW/OSU/OSW | OSWALDTWISTLE - Blackburn Road | None | n.d. | | |
NW/OSU/OSW/E | ESTATE and PROPERTY | There are five technical drawings in this series. | n.d. | | |
NW/OSU/OSW/E/T | ESTATE and PROPERTY - Technical Drawings | None | n.d. | | |
NW/OSU/OSW/E/T/1 | Oswaldtwistle - Blackburn Road - Section and Plan of Holder Tank Alterations | Oswaldtwistle Urban District Council section... | 1911 | | Drawing |
NW/OSU/OSW/E/T/2 | Oswaldtwistle - Blackburn Road - Blueprint of Tank Alterations | Oswaldtwistle Urban District Council Blueprint... | n.d. [1911?] | | Drawing |
NW/OSU/OSW/E/T/3 | Oswaldtwistle - Blackburn Road - Plan, Section and Elevation of Gas Holder Tank Elevations | Oswaldtwistle Urban District Council Plan... | 1928 | | Drawing |
NW/OSU/OSW/E/T/4 | Oswaldtwistle - Blackburn Road - Blueprint of Gas Holder Pipes | Oswaldtwistle Urban District Council Blueprint... | n.d. | | Drawing |
NW/OSU/OSW/E/T/5 | Oswaldtwistle - Blackburn Road - Blueprint of details of tank carriage baseplates etc | Blueprint of details of tank carriage... | 1928 | | Drawing |