Chaplais, Pierre, ed. English Royal Documents: King John - Henry VI, 1199-1461. Oxford: Clarendon Press, 1971.
Abstract: Contains 27 plates in actual or near actual size of original manuscripts, mostly from the PRO. They include royal writs, patent and close.
Prestwich, Michael. Documents Illustrating the Crisis of 1297-98 in England . Royal Historical Society. Camden 4th ser., 24 . London : Royal Historical Society, 1980.
Stubbs, William, and H. W. Carless Davis, eds. Select Charters and Other Illustrations of English Constitutional History From the Earliest Times to the Reign of Edward the First. 9th ed. Oxford: Clarendon Press, 1921.
Notes: Also available online in MOML and HeinOnline (subscription databases)
Abstract: Aims to include every constitutional document of importance for the period. Contents: Part II, Extracts illustrative of the early polity of the English (Anglo Saxon); Part III, Charters and Excerpts illustrative of the Norman period; Part IV, Charters and excerpts illustrative of the reign of Henry II, it includes the assizes of Henry II; Part V, Charters and excerpts illustrative of the reigns of Richard I and John; Part VI, Charters and excerpts illustrative of the reign of Henry III; Part VII, Charters illustrative of the reign of Edward I. Text in Latin with English notes. The Anglo-Saxon laws are quoted in the original language in the 9th edition, edited by H.W. Carless Davis.
Wilkinson, Bertie, ed. The Constitutional History of Medieval England: 1216-1399, With Select Documents. 3 Vols. London: Longmans, Green, 1948-1958.
Abstract: A compilation, grouped by topic and with extensive interpretative commentary, of the main documents of importance for the study of medieval constitutional history. English translation.