An Inquiry into the Nature and Causes of the Wealth of Nations (Cannan ed.), in 2 vols.
Cannan’s justly famous early 20th century edition of Smith’s Wealth of Nations with his introduction and notes.
An Inquiry into the Nature and Causes of the Wealth of Nations by Adam Smith, edited with an Introduction, Notes, Marginal Summary and an Enlarged Index by Edwin Cannan (London: Methuen, 1904). 2 vols.
The text is in the public domain.