is an interrelated collection. written in the Outremer The Battle of Hattin and Saladin's conquest are covered by the short but detailed , and two works by Peter of Blois and , alongside more general works. Archives were lost with the loss of territory to Saladin in 1187 and the final collapse of Outremer in 1291. The travel tales by pilgrims such as John of Würzburg, Saewulf, and Nikulás of Munkethverá provide details of topography and society, Assizes of Jerusalem give information on the legal system and provides family histories and relationships although its accuracy is questioned for the early 12th century. Gestes des Chiprois is the only surviving eyewitness account of the end of the Crusader States. It forms the basis of an account by Marino Sanuto the Elder. Other accounts, such as the anonymous Thaddeus of Naples's accuse the Acre garrison of cowardice. Little written evidence survives from the county of Edessa but much more from the kings of Jerusalem, the princes of Antioch, the counts of Tripol and the lordship of Joscelin III of Courtenay. The military orders; the Church of the Holy Sepulchre; and the Abbey of Saint Mary of the Valley of Jehosaphat provide surviving documents and letters that survive. Most are not yet available in full-text versions and the reliance is still on the digest provided by Reinhold Röhricht in his at the end of the 19thcentury. Late 12th-century sources The Second Crusade's failure resulted in fewer sources. Three narratives exists: Odo of Deuil’s , Sugar’s Life of Louis VII, and Otto of Freising’s . William of Tyre was absent from the Levant, but sought information to explain the failure. Historians now consider that, during this period, crusading expanded to include fighting the pagan Slavs in northern Europe, and the Moors in the Iberian Peninsula which is recorded in and the work known variously as theTeutonic Source or Lisbon Letter. The papal master-plan against Slavs east of the river Elbe has Helmold of Bosau's account. The Third Crusade is more celebrated because of the involvement of Richard I of England and its relative success. has a contested relationship with the "Latin Continuation" of William of Tyre. Ambroise claimed to be an eyewitness leaving long poem in Old French. Informative Anglo-Norman writers include: Roger of Howden who was with the fleet to Outremer and returned in 1191. Richard of Devizes had a source who journeyed