Map of Cornwall by John Cary, 1790.

Taken from Cary's Traveller's Companion, or a Delineation of the Turnpike Roads of England and Wales, 1790.
Reprinted by G & J Cary, 86 St James Street, London, c.1820s.

Reprinted 1792, 1806, 1810, 1812, 1814, 1817, 1819, 1821, 1824, 1826, and twice in 1828.

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