He was postmillenial historicist - as seems clear from his "Interpretation of Prophecy" and "Ezekiel".
His "Typology" and "Revelation of Law in Scripture" are also excellent books to wade through, and, like all his books, "eminently sane."
It is especially important that books on eschatology be "eminently sane", when there is so much on eschatology that is "eminently insane".