1. IOR/L/PJ/6/1574, File 1500 Reference (shelfmark): IOR/L/PJ/6/1574, File 1500 Title: Mr E Tyson, Calcutta Police: deputation to New Scotland Yard to study English police methods Collection Area: India Office Records and Private Papers Languages: English Date Range: Feb 1919-Oct 1919 Extent: 1 file