Hume, David. The Letters of David Hume, edited by J.Y.T. Greig, 2 volumes, Oxford: Clarendon Press, 1932.
From the publisher:
J. Y. T. Greig’s two-volume edition, first published in 1932, presents the correspondence of one of the great men of the 18th century. This first volume contains David Hume’s letters from 1727 to 1765. Hume correspondents include such famous thinkers and public figures as Jean-Jacques Rousseau, Adam Smith, James Boswell, and Benjamin Franklin. The edition offers a rich picture of the man and his age, and is a uniquely valuable resource to anyone with an interest in early modern thought.