1. IOR/L/PJ/6/1666, File 2391 Reference (shelfmark): IOR/L/PJ/6/1666, File 2391 Title: Deputation to the UK of Mr E A Hartley, Calcutta Police, to study methods employed at Scotland Yard Collection Area: India Office Records and Private Papers Languages: English Date Range: Mar 1920-Jun 1920 Extent: 1 file