RECOMMENDED SOURCEBOOKS
I recommend the following works as potential sources and starting points for research papers:
Nels M. Bailkey, ed., Readings in Ancient History: Thought and Experience from Gilgamesh to St. Augustine.
Michael Maas, ed., Readings in Late Antiquity: A Sourcebook.
J. N. Hillgarth, ed., Christianity and Paganism, 350-750: The Conversion of Western Europe.
Naphtali Lewis and Meyer Reinhold, Roman Civilization. Sourcebooks on the Roman Republic and Empire.
Alfred J. Andrea, ed., The Medieval Record: Sources of Medieval History.
Patrick J. Geary, Readings in Medieval History.
David Herlihy, ed., Medieval Culture and Society.
David Herlihy, ed., The History of Feudalism.
James Bruce Ross and Mary Martin McLaughlin, eds., The Portable Medieval Reader.
Basil Davenport, ed., The Portable Roman Reader.
M. I. Finley, ed., The Greek Historians. (Viking Portable Library)
Deno John Geanokoplos, Byzantium: Church, Society, and Civilization seen through contemporary eyes.
Bernard Lewis, ed., Islam from the Prophet Muhammad to the Capture of Constantinople.
Remember, these anthologies are starting points. Use them to locate fuller, more complete sources. In addition, check the source websites.