The art of painting (De arte graphica)

Dufresnoy, Charles-Alphonse, 1611-1668.
New York : Arno Press, 1969.

The correspondence of Richard Hurd & William Mason, and letters of Richard Hurd to Thomas Gray

Hurd, Richard, 1720-1808.
Cambridge : University Press, 1932.

The letters of Thomas Gray, including the correspondence of Gray and Mason

Gray, Thomas, 1716-1771.
London : G. Bell and sons, 1900-1912.
2nd. ed., rev. (v. 1 only)