Karl Popper, The Poverty of Historicism (New York: Harper & Row, 1964); Carl G. Hempel, Philosophy of Natural History (Englewood Cliffs, NJ: Prentice-Hall, 1966); W. Dray, Laws and Explanation in History (Oxford: Oxford Univ. Press, 1957); P. Gardiner, The Nature of Historical Explanation (Oxford: Oxford Univ. Press, 1952); Alan Donagan, “Historical Explanation: The Popper-Hempel Theory Reconsidered,” History and Theory 4 (1964), pp. 1–26; H. Adelman, “Rational Explanation Reconsidered: Case Studies and the Hempel Dray Model,” History and Theory 13 (1974), pp. 208–224; Paul Dietl, “Deduction and Historical Explanation,” History and Theory 7 (1968), pp. 167–188; Maurice Mandelbaum, “Historical Explanation: The Problem of Covering Laws,” History and Theory 1 (1961), pp. 229–242.