Showing 56 results
Archival description
Letter from J Peat about cobalt
Letter from J Peat about cobalt
Letters from J Sowell on Mr Hart's claim for the discovery of cobalt
Letters from J Sowell on Mr Hart's claim for the discovery of cobalt
Letter from J Peat about cobalt and zinc
Letter from J Peat about cobalt and zinc
Letter from Francis Beauchamp about specimens of cobalt, copper ores and mandicks
Letter from Francis Beauchamp about specimens of cobalt, copper ores and mandicks
Letter from D W Linden about cobalt
Letter from D W Linden about cobalt
Letter from Francis Beauchamp about cobalt
Letter from Francis Beauchamp about cobalt
Letter from J Holdship about cobalt and finding a substitute for white lead
Letter from J Holdship about cobalt and finding a substitute for white lead
Letter from D W Linden about cobalt
Letter from D W Linden about cobalt
Letter from Charles Powell about cobalt
Letter from Charles Powell about cobalt
Letter to Harry Hart from James Pennington about cobalt
Letter to Harry Hart from James Pennington about cobalt
Letter to Harry Hart from Thomas Teague about cobalt
Letter to Harry Hart from Thomas Teague about cobalt
Letter to Harry Hart from Thomas Maydew & Co about cobalt
Letter to Harry Hart from Thomas Maydew & Co about cobalt
Letter from Harry Hart about cobalt
Letter from Harry Hart about cobalt
Letter from Harry Hart about cobalt
Letter from Harry Hart about cobalt
Letter from Joseph Lowell about cobalt, with certificates
Letter from Joseph Lowell about cobalt, with certificates
Letter from James Dean about Mr Hart's claim for the discovery of cobalt
Letter from James Dean about Mr Hart's claim for the discovery of cobalt
Letters from John Heaver about his discovery of cobalt (certificate signed by Josiah Wedgwood, Etruria, 4/4/1817)
Letters from John Heaver about his discovery of cobalt (certificate signed by Josiah Wedgwood, Etruria, 4/4/1817)
Letter from John Heaver about his discovery of cobalt
Letter from John Heaver about his discovery of cobalt
Letter from John Heaver about his claim to have discovered cobalt, also about Mr Hart, with certificates and envelope
Letter from John Heaver about his claim to have discovered cobalt, also about Mr Hart, with certificates and envelope
Letter from John Jacks about premiums for English cobalt
Letter from John Jacks about premiums for English cobalt