Here is a list of articles from the Sojourners archives as well as books written by Walter Wink.
ARTCICLES FROM SOJOURNERS ARCHIVES:
“Unmasking the Powers: Roman and American Economics ” (October 1978)
“The Bonhoeffer Assumption ” (January-February 2002)
“The Silence of God ” (November-December 2001)
The Powers That Be: Theology For a New Millennium  (New York: Doubleday, 1999).
The Human Being: Jesus and the Enigma of the Son of Man  (Fortress Press, 2001). Here is an excerpt published in the March-April 2002 issue of Sojourners. 
Peace Is The Way: Writings on Nonviolence from the Fellowship of Reconciliation  (Edited by Walter Wink. Orbis Books, 2000).
Homosexuality and Christian Faith: Questions for Conscience for the Churches  (Minneapolis: Fortress Press, 1999).
Naming the Powers: The Language of Powers in the New Testament  (Philadelphia: Fortress Press, 1984).
Unmasking the Powers: The Invisible Forces That Determine Human Existence  (Philadelphia: Fortress Press 1986).
Engaging the Powers: Discernment and Resistance in a World of Domination  (Minneapolis: Fortress Press, 1992).
When the Powers Fall: Reconciliation in the Healing of Nations  (Minneapolis: Fortress Press, 1998).
Cracking the Gnostic Code: The Powers in Gnosticism  (Society of Biblical Literature Monograph Series; Atlanta: Scholars Press, 1993).
Violence and Nonviolence in South Africa  (Philadelphia: Fortress Press, 1973).
John the Baptist in the Gospel Tradition  (Cambridge Univ. Press, 1968).