1. IOR/L/MIL/17/12/54-60 Reference (shelfmark): IOR/L/MIL/17/12/54-60 Title: Bhutan & Sikkim Collection Area: India Office Records and Private Papers Languages: English Date Range: 1873-1927 Extent: 7 volumes
2. IOR/L/MIL/17/12/58 Reference (shelfmark): IOR/L/MIL/17/12/58 Title: Routes in Sikkim. Simla: GSI, 1910. Scope & Content: Maps; Confidential Collection Area: India Office Records and Private Papers Languages: English Date Range: 1910 Extent: ii, 73p, 20cm
3. IOR/L/MIL/17/12/57 Reference (shelfmark): IOR/L/MIL/17/12/57 Title: Military report on Sikkim and Bhutan. Calcutta: GSI, 1932. Scope & Content: Maps; Confidential Collection Area: India Office Records and Private Papers Languages: English Date Range: 1932 Extent: 171p, 18cm
4. IOR/L/MIL/17/12/59 Reference (shelfmark): IOR/L/MIL/17/12/59 Title: Proceedings of the Government of India Military Department: Sikkim 1888-90. Calcutta: 1890. Scope & Content: Maps & sketches Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890 Extent: xxii, 468p, 33cm
5. IOR/L/MIL/17/12/55 Reference (shelfmark): IOR/L/MIL/17/12/55 Title: A short military report on Bhutan. Simla: Intelligence Branch QMG's Dept, 1906. Scope & Content: Illustrations, maps; Confidential Collection Area: India Office Records and Private Papers Languages: English Date Range: 1906 Extent: 157p, 24cm
6. IOR/L/MIL/17/12/56 Reference (shelfmark): IOR/L/MIL/17/12/56 Title: Mobilisation - Routes in Butan 1925. Simla: GSI, 1926. Scope & Content: Map; Confidential, with Corrections... 1st series, 1927, 11p Collection Area: India Office Records and Private Papers Languages: English Date Range: 1926-1927 Extent: iv, 101p, 18cm
7. IOR/L/MIL/17/12/60 Reference (shelfmark): IOR/L/MIL/17/12/60 Title: Report on the Sikkim Expedition from January 1888 to January 1890. Lt Charles John Markham. Calcutta: Intelligence Branch QMG's Dept, 1890. Scope & Content: Map Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890 Extent: 90p, 24cm
8. IOR/L/MIL/17/12/54 Reference (shelfmark): IOR/L/MIL/17/12/54 Title: A military report on the country of Bhutan, containing all the information of military importance which has been collected up to date (12th July 1866). Lt Charles Metcalfe MacGregor. Calcutta: QMG's Dept, 1873. Scope & Content: Map Collection Area: India Office Records and Private Papers Languages: English Date Range: 1873 Extent: [iv], 74p, 33cm