- 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/L13/13/4–12
Recruitment
- D LONS/L13/13/4: Papers re the Earl of Lonsdale's role in recruitment - date: 4 September - 3 December 1914
- D LONS/L13/13/5: Papers re the Battalion's original headquarters at Penrith - date: 9 September 1914 - 10 February 1915
- D LONS/L13/13/6: Papers re recruitment in the Carlisle area - date: 1 October 1914 - 20 April 1915
- D LONS/L13/13/7: Papers re recruitment - date: 14 October 1914 - 7 June 1915
- D LONS/L13/13/8: Papers re recruiting - date: 23 September 1914 - 11 June 1915
- D LONS/L13/13/9: Papers re the recruitment of men with criminal records - date: 19 October 1914 - 1 July 1915
- D LONS/L13/13/10: File re recruitment including medical history, pay, attestation of short service - date: 21 June - 8 July 1915
- D LONS/L13/13/11: Col. Machell's file re - date: 16 September 1914 - 18 August 1915
- D LONS/L13/13/12: File mainly re recruitment and including - date: 6 September 1914 - 20 September 1915
—For access to the above records please contact the Cumbria Archive Centre (Carlisle)