Letter from John Mooring about cobalt, specimen sent from Plymouth

• RSA/PR/GE/110/1/8
• Pièce
• 15/11/1754

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Dr Linden about cobalt mines in parts of Wales

• RSA/PR/GE/110/1/12
• Pièce
• 10/1/1755

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Dr Lewis about cobalt

• RSA/PR/GE/110/1/15
• Pièce
• 8/4/1755

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Extract of letter from Peter Ornskold about cobalt and bismuth ore

• RSA/PR/GE/110/2/122
• Pièce
• 20/8/1755

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter in French from M Hellot about cobalt

• RSA/PR/GE/110/5/73
• Pièce
• 11/1/1757

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Francis Beauchamp about his mine of cobalt

• RSA/PR/GE/110/6/91
• Pièce
• 16/5/1757

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from J Holdship about cobalt and finding a substitute for white lead

• RSA/PR/MC/105/10/435
• Pièce
• 26/2/1789

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter to Harry Hart from Thomas Teague about cobalt

• RSA/PR/MC/105/10/511
• Pièce
• 20/12/1816

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Joseph Lowell about cobalt, with certificates

• RSA/PR/MC/105/10/515
• Pièce
• 12/5/1817

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Sam Howard about the cobalt which he has discovered on an estate in Derbyshire

• RSA/PR/MC/105/10/611
• Pièce
• 3/11/1806

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from J Peat about cobalt and zinc

• RSA/PR/GE/110/13/38
• Pièce
• 3/11/1762

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Francis Beauchamp about cobalt samples

• RSA/PR/GE/110/1/28
• Pièce
• 23/6/1755

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Notes on cobalt, zaffre and smalt

• RSA/PR/GE/110/2/97
• Pièce
• 1756

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from D W Linden about cobalt

• RSA/PR/GE/110/5/5
• Pièce
• 22/10/1754

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from George Best about cobalt

• RSA/PR/GE/110/5/7
• Pièce
• 28/11/1754

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from D W Linden about cobalt

• RSA/PR/GE/110/5/9
• Pièce
• 2/12/1754

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Translation of a letter in French from Jean Gottlieb Lehmann, Berlin about cobalt

• RSA/PR/GE/110/6/109
• Pièce
• 4/8/1757

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter in French from Jean Gottlieb Lehmann, Berlin about a premium about cobalt

• RSA/PR/GE/110/8/100
• Pièce
• 8/2/1760

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter from Thomas Turner requesting the loan of a manuscript about cobalt, belonging to the Society

• RSA/PR/MC/105/10/177
• Pièce
• 22/2/1791

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)

Letter to Harry Hart from Thomas Maydew & Co about cobalt

• RSA/PR/MC/105/10/512
• Pièce
• 24/2/1817

Fait partie de Royal Society for the encouragement of Arts, Manufactures and Commerce (RSA)