People in the scientific professions and inventors.

C

• Chalmers, James (Scottish, 1982-1853, Postal reform)

F

• Faraday, Michael (English, 1791-1867)

H

• Hill, Rowland (English, 1795-1879, Postal reformer, educator)

O

• Olmsted, Denison (American, 1791-1859, Astronomy and Physics)