1. IOR/W/L/PS/21/K64 Reference (shelfmark): IOR/W/L/PS/21/K64 Title: Chart of Triangulation, N.W. Trans. Frontier Series, Sheets 28 N.W., S.W., S.E. and N.E. 27 N.E. Collection Area: Map Collections Languages: English Date Range: [c 1900] Extent: 1 item