One of the things I have learned at seminary is that buying a set of commentaries is not always the best way to go. For those who are interested, here is a list of resources on 1 Thessalonians my prof put together for my NT Exegesis Class.
Best, Ernest. A Commentary on the First and Second Epistles to the Thessalonians. Harper’s New Testament Commentaries. New York: Harper and Row, 1972.
Bruce, F. F. 1 and 2 Thessalonians. Word Biblical Commentary. Waco, Texas: Word, 1982.
Collins, Raymond. The Birth of the New Testament: The Origin and Development of the First Christian Generation. New York: Crossroad, 1993.
________ . Studies on the First Letter to the Thessalonians. Bibliotheca ephemeridum theologicarum lovaniensium 66. Leuven: University Press, 1984.
________ , editor. The Thessalonian Correspondence. Bibliotheca ephemeridum theologicarum lovaniensium 87. Leuven: University Press, 1990.
Donfried, Karl Paul. Paul, Thessalonica, and Early Christianity. Grand Rapids: Eerdmans, 2002.
________, and I. Howard Marshall. The Theology of the Shorter Pauline Epistles. New Testament Theology. Cambridge: Cambridge University Press, 1993.
Frame, J. E. A Critical and Exegetical Commentary on the Epistles of Paul to the Thessalonians. International Critical Commentary. Edinburgh: T. and T. Clark, 1912.
Furnish, Victor Paul. 1 Thessalonians, 2 Thessalonians. Abingdon New Testament Commentaries. Nashville: Abingdon, 2007.
Gaventa, Beverly Roberts. First and Second Thessalonians. Interpretation. Louisville: Westminster John Knox, 1998.
Juel, Donald H. 1 Thessalonians. Augsburg Commentary on the New Testament. Minneapolis: Augsburg, 1985.
Krentz, Edgar M. “First and Second Epistles to the Thessalonians,” in Anchor Bible Dictionary. New York: Doubleday, 1992. 6:515-23.
Malherbe, Abraham J. Paul and the Thessalonians: The Philosophic Tradition of Pastoral Care. Philadelphia: Fortress, 1987.
The Letter to the Thessalonians. Anchor Bible. New York: Doubleday, 2000.
Marshall, I. Howard. 1 and 2 Thessalonians. New Century Bible Commentary. Grand Rapids: Eerdmans, 1983.
Morris, Leon. The First and Second Epistles to the Thessalonians. New International Commentary on the New Testament, revised edition. Grand Rapids: Eerdmans, 1991.
Richard, Earl. First and Second Thessalonians. Sacra Pagina 11. Collegeville, MN: Liturgical, 1995.