1. IOR/L/PS/11/192, P 4/1921 Reference (shelfmark): IOR/L/PS/11/192, P 4/1921 Title: P 4/1921 Mesopotamia: employment in Mesopotamia of Yemeni battalion from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 13 Dec 1920-1 Feb 1921 Extent: 1 file