Resources on Atonement

(1) The Atonement By John Murray

(2) J.I. Packer's introduction to "Death of Death and the Death of Christ"

(3) The Logic of Penal Substitution by J.I. Packer

(4) Christ Our Penal Substitute by R.L. Dabney

(5) Nothing But the Blood by Mark Dever

(6) God's Reconcilling Work in Christ by Herman Ridderbos

(7) The Passion of Jesus Christ by John Piper (online book)

Chapters 1-6 (PDF)
Chapters 7-22 (PDF)
Chapters 23-38 (PDF)
Chapters 39-50 (PDF)

(8) The Necessity of the Atonement by Jonathan Edwards

(9) Pardon For the Greatest of Sinners by Jonathan Edwards

(10) Christ Our Great High Priest by by Martin Luther (1483-1546)

(11) Our Suffering Substitute by C.H. Spurgeon

(12) The Death of Christ by John Murray

(13) Blessed Are They Whose Iniquity is Forgiven by John Calvin

(14) Nature of Christ's Sacrifice by R. L. Dabney

(15) The Atonement by J. Gresham Machen

(16) Abstract of Systematic Theology THE ATONEMENT OF CHRIST Boyce

(17) The Doctrine of the Atonement - Part I, Part II, Part III by J. Gresham Machen

(18) The Day of Atonement by C.H. Spurgeon

(19) The Sin-Bearer by C.H. Spurgeon

(20) The Old, Old Story by Charles Spurgeon

(21) The Atonement: Was the Sin Question Finally Settled at the Cross? by Arthur W. Pink

(22) THE ATONEMENT [Part 1] Arthur.W. Pink
Introductory Essay Part 2 A.W. Pink

(23) The Cross of Christ by Dr. R. C. Sproul

[Praise the Lord for Monergism's link on this.]