1. IOR/L/PS/11/21, P 2420/1912 Reference (shelfmark): IOR/L/PS/11/21, P 2420/1912 Title: P 2420/1912 Estimate of revenue likely to be derived from the use of the wireless system in the Persian Gulf Collection Area: India Office Records and Private Papers Languages: English Date Range: 6 Jun 1912 Extent: 1 file