1. IOR/W/L/PS/21/D2 Reference (shelfmark): IOR/W/L/PS/21/D2 Title: Lieutenant-Colonel E.C. Ross. Map of Oman, showing the distribution of the principal tribes. Scope & Content: Scale: 1 inch to 16 miles (?) Collection Area: Map Collections Languages: English Date Range: [c 1900] Extent: 1 item