The Oxford edition. (Two volumes; or, on India paper, in one volume.)
The Globe edition. (One volume; double columns of print. Macmillan.)
The Everyman edition. (Two volumes. Dent.)
The contemporary authorities for Johnson's life, other than Boswell, are Sir John Hawkins's Life, Mrs Piozzi's Anecdotes, Fanny Burney's Diary, and anecdotes by many others.
Most of these were collected by the late Dr Birkbeck Hill in his two volumes of Johnsonian Miscellanies (Oxford, 1897); two volumes of Johnson's Letters were also published by the same editor in 1892.
Of modern criticism on Johnson the following may be recommended:
Lord Macaulay: Boswell's Life of Johnson. 1831.
Article on Johnson in the Encyclopaedia Britannica, 1856.
Thomas Carlyle: Boswell's Life of Johnson. 1832.