[en] Encyclopedia of the Middle Ages Facts on File
[en] [Gutenberg 43880] • The Mediaeval Mind (Volume 1 of 2) / A History of the Development of Thought and Emotion in the Middle Ages Harvard University Press (Cambridge, MA)
[en] [Gutenberg 43881] • The Mediaeval Mind (Volume 2 of 2) / A History of the Development of Thought and Emotion in the Middle Ages Harvard University Press (Cambridge, MA)
[en] Medicine in the Middle Ages · Surviving the Times Pen and Sword History
[en] The Gilded Age in New York, 1870-1910 Black Dog & Leventhal
[en] [Gutenberg 4664] • Light, Life, and Love: Selections from the German Mystics of the Middle Ages Kessinger Publishing
[en] The World of Medieval Monasticism · Its History and Forms of Life (Cistercian Studies) Cistercian Publications
[en] The Oxford History of Medieval Europe Oxford University Press, USA
[en] [Gutenberg 39966] • Curiosities of Christian History Prior to the Reformation Palatine Press
[en] The Making of the Middle Ages Yale University Press (New Haven)