Professor John Murray (1898-1975), a native of Scotland, studied at Princeton Theological Seminary under J. Gresham Machen and Geerhardus Vos . He taught systematic theology at Westminster Theological Seminary from 1930 to 1966, and was an early trustee of the Banner of Truth. Besides the material in the four-volume Collected Writings, his primary published works are a commentary on Romans, Redemption Accomplished and Applied, Principles of Conduct, The Imputation of Adam's Sin, Baptism, and Divorce.