1. IOR/Z/E/4/28/R1075 Reference (shelfmark): IOR/Z/E/4/28/R1075 Title: Robertson, Rev. P., M.A., copies of pamphlet entitled "The Theory and Practice of Great Circle Sailing under one General Rule" forwarded to Marine Department Collection Area: India Office Records and Private Papers Languages: English Date Range: 1856-1857 Extent: 1 entry