Thorold Rogers, in his Historical Gleanings, 2nd series.
Edwards (Gleanings, iii.
On the Wealth of Nations, see the prefaces to M'Culloch's, Rogers's, Shield Nicholson's and Cannan's editions of that work; Rogers's Historical Gleanings (1869); the art.
In the meantime knowledge on the subject is mingled with much that is obviously mythical and with gleanings from the casual references of travellers and authors.
The sayings and Johnsoniana have been reprinted in very many and various forms. Valuable work has been done in Johnsonian genealogy and topography by Aleyn Lyell Reade in his Johnsonian Gleanings, &c., and in the Memorials of Old Staffordshire (ed.