Letter 1822 Nov 19
- Made:
- 1822
- maker:
- David Brewster
[Letter] 1822 Nov 19, Edinburgh, 10 Coates Crescent [to] John Barton, Royal Mint, London / D. Brewster. [Requesting grooved specimens of steel, silver, gold, glass etc. executed by Barton with his "very accurate" [ruling] machine, for use in Brewster's experiments with the spectrum]
