1. IOR/L/PS/20/52 Reference (shelfmark): IOR/L/PS/20/52 Title: Military report on Siam. Part III. Routes Calcutta: Intelligence Branch, Division of Chief of Staff, 1907 Scope & Content: Additions and corrections, 1913, 1p (in pocket) Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907 Extent: vii, 213pp