Hugh Candidus, Chronicle (to 1177)
Robert Swaffham, Chronicle (to 1246)
Walter of Whittelsey, Chronicle (to 1321)
Abridgment of the Gesta Herewardi
Papal and royal charters of Peterborough abbey
Charters, including Magna Carta (1215, 1225) and Carta de Foresta
John of Burgundy, Tractatus de morbo epidemiae
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