Our Presbyterian forefathers were not afraid to tackle one of the hardest books in the New Testament: the Book of Revelation. We've uploaded three commentaries on the book to the Log College Press website:
1. Alexander McLeod, Lectures Upon the Principal Prophecies of Revelation (1814)
2. Thomas Murphy, The Message to the Seven Churches of Asia (1895)
3. James Beverlin Ramsey, The Spiritual Kingdom: An Exposition of Revelation 1-11 (1873)
Though not full commentaries as we know them today, these books will give you a taste for how the 19th century viewed the book of Revelation. Happy historical hermeneutical treasure hunting!