51. IOR/L/PS/20/D160/1 Reference (shelfmark): IOR/L/PS/20/D160/1 Title: Military report on Siam Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907-1912 Extent: 1 volume
52. IOR/L/PS/20/D160/2 Reference (shelfmark): IOR/L/PS/20/D160/2 Title: Military report on Siam Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907-1912 Extent: 1 volume
53. IOR/L/PS/20/D160/3 Reference (shelfmark): IOR/L/PS/20/D160/3 Title: Military report on Siam Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907-1913 Extent: 1 volume
54. IOR/L/PS/20/D160/4 Reference (shelfmark): IOR/L/PS/20/D160/4 Title: Additions to routes and Gazetteer of Siam Simla: [Intelligence Branch, Div of Chief of Staff, 1907 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907 Extent: 2pp
55. IOR/L/PS/20/D162 Reference (shelfmark): IOR/L/PS/20/D162 Title: Military report on Presidency & Assam District, 1931. Vol II - northern frontier tracts. Part I - Towang, Bhareli and Subansiri river areas. Part II - Dihang, Dibang and Lohit river areas Simla: General Staff India, 1931 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1931 Extent: v, 224pp 2 maps (1 in pocket)
56. IOR/L/PS/20/D163/1 Reference (shelfmark): IOR/L/PS/20/D163/1 Title: Routes in Bhutan, 1925 Simla: General Staff India, 1926 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1926 Extent: iv, 101pp map (in pocket)
57. IOR/L/PS/20/D163/2 Reference (shelfmark): IOR/L/PS/20/D163/2 Title: Corrections to routes in Bhutan, 1925 Simla: General Staff India, 1st series, 1927 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927 Extent: 11pp
58. IOR/L/PS/20/D167/1 Reference (shelfmark): IOR/L/PS/20/D167/1 Title: Routes in Tibet Simla: General Staff, Army HQ India, 1910 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1910 Extent: vi, 287pp map (in pocket)
59. IOR/L/PS/20/D167/2 Reference (shelfmark): IOR/L/PS/20/D167/2 Title: Additions and corrections to routes in Tibet, 1910 [Simla: General Staff India, 1913] Collection Area: India Office Records and Private Papers Languages: English Date Range: 1913 Extent: 30pp
60. IOR/L/PS/20/D167/3 Reference (shelfmark): IOR/L/PS/20/D167/3 Title: Additions and corrections to routes in Tibet, 1910 [Simla: General Staff India, 2nd series, 1918] Collection Area: India Office Records and Private Papers Languages: English Date Range: 1918 Extent: 12pp