Source material where the term "Blackhall" is used. Some are used more extensively than others.
- The Lonsdale Battalion Border Regiment, September 1914 to June 1915.
- Record of the XIth (Service) Battalion (Lonsdale) - In England.
- Lonsdale Records/Accommodation and messing (D LONS/L13/13/52–59)
- Lonsdale Records/Battalion and daily orders (D LONS/L13/13/135–146)
- Lonsdale Records/Discipline (D LONS/L13/13/104–110)
- Lonsdale Records/12th (Reserve) Battalion/Papers arranged chronologically (D LONS/L13/13/247–274)
- Press release 11 December, 1914 (DLONS/L/13/13/8)
- Lonsdale Battalion - New Company to be Formed (Workington Star and Harrington Guardian, Published 6 November, 1914)