1. Annales Reinhardsbrunnenses, ed. Franz X. Wegele,Thüringische Geschichtsquellen, Bd. 1 (Jena, 1854), Ad. an. 1227, pp. 198–208. There is a brief English summary, with an illustration of the parting window in the Elizabeth church in Marburg, in Norbert Ohler,The Medieval Traveller, trans. Caroline Hillier (Woodbridge, 1989), pp. 136–40. I have not seen the German original,Reisen im Mittelalter(Munich, 1986). Louis’s uncle and predecessor as Landgraf, Louis III, also died on crusade and became the subject of a rhymed chronicle in Middle High German:Der Kreuzfahrt des Landgrafen Ludwigs des Frommen von Thüringen, ed. Hans Naumann, MGH Deutsche Chroniken, Bd. IV, Teil2 (Munich, 1980).
2. An exception for the early period is John France,Victory in the East: A Military History of the First Crusade(Cambridge, 1994). Of course, the travel of the armies of the Fourth Crusade is a central theme in its history. Most recently, Jonathan Phillips,The Fourth Crusade and the Sack of Constantinople(London, 2004), and John H. Pryor, “The Venetian fleet for the Fourth Crusade and the diversion of the crusade to Constantinople,” inEC, I, pp. 103–23.
3. Elizabeth Jeffreys and Michael Jeffreys, “The ‘Wild Beast from the West’: Immediate Literary Reactions from Byzantium to the Second Crusade,” and Angeiki E. Laiou, “Byzantine trade with Christians and Muslims and the Crusades,” both inThe Crusades from the Perspective of Byzantium and the Muslim World, ed. Angeliki E. Laiou and Roy Parvez Mottahedeh (Washington, D.C., 2001), pp. 101–16, and 157–92.
4. Michael Lower,The Barons’ Crusade: A Call to Arms and Its Consequences(Philadelphia, 2005), 212, n. 48, citing John H. Pryor,Geography, Technology, and War: Studies in the Maritime History of the Mediterranean, 649–1571(Cambridge, 1988).
5. On crusade memory and the use of earlier crusade experience in later crusade planning, see Jonathan Phillips, “Odo of Deuil’sDe Profectione Ludovici VII in Orientemas a source for the Second Crusade,” inEC, I, pp. 80–102, and Jay Rubenstein, “Putting History to Use: Three Crusade Chronicles in Context,”Viator35 (2004), 131–68. The accounts of earlier crusading ventures were regularly read by later crusaders well into the fourteenth century, some of the more recent accounts (William of Tyre and Jacques de Vitry) replacing older ones.