- Main article: List of Surviving Lonsdale Records
The list of Lonsdale Records relating to the Lowther family and the Earls of Lonsdale are stored at the Cumbria Record Office (Carlisle Headquarters). The Lowther Family Estate have thousands of records listed in various categories and sub-categories ranging from DLons/L5 to DLons/L25. The records relating to the 11th Border Regiment (Lonsdale) range from DLons/L13/13/1 to DLons/L13/13/282
D LONS/L13/13/150–152
Wensley Camp
- D LONS/L13/13/150: File of battalion orders and papers re the arrangements to move the battalion from Brackhall Camp to Prees Heath Camp, Whitchurch and from Whitchurch to Wensley - date: 7 May - 19 June 1915
- D LONS/L13/13/151: Papers re regimental institutes at Prees Heath and Wensley - date: 30 March - 21 August 1915
- D LONS/L13/13/152: Papers re training - date: 19 June - 3 September 1915
—For access to the above records please contact the Cumbria Archive Centre (Carlisle)