1. IOR/L/PS/11/197, P 2493/1921 Reference (shelfmark): IOR/L/PS/11/197, P 2493/1921 Title: P 2493/1921 Persia: text of the Sino-Persian Treaty Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 Jan 1921-25 Sep 1922 Extent: 1 file