Tillyard's book Milton is the prime example of this, as are Sir Henry John Newbolt's The Teaching of English in England, Hugh Kingsmill's book on Matthew Arnold, some of T. S. Eliot's writing, and perhaps even H.W. Garrod's book on Wordsworth.
Tillyard's work on Milton is a prime example of this trend, as are Newbolt's "The Teaching of English in England," Kingsmill's study of Matthew Arnold, some of Eliot's writing, and possibly even Garrod's analysis of Wordsworth.