1. IOR/Z/E/4/19/J283 Reference (shelfmark): IOR/Z/E/4/19/J283 Title: Johnson, Capt. E.J., R.N., F.R.S., copies of work by entitled "Practical Illustration of the Necessity for Ascertaining the Deviation of the Compass etc" forwarded to India Collection Area: India Office Records and Private Papers Languages: English Date Range: 1846-1849 Extent: 1 entry