"One of the peculiarities of early Aragonese history is the relative dearth of historiographic materials surviving from the old heartland of the kingdom. The Aragonese have traditionally been viewed as proud of family and jealous of tradition. ..."

Not a particularly long list of items but they seem to cover the highlights.

"The three charters described below show relations between lords and peasants in twelfth and thirteenth-century Catalonia. They are from the cathedral archives of Vic which lies about 30 miles north of Barcelona. Until the late eleventh century, most peasants were tenants, that is they held their land from a lord, but the rent they paid was usually not burdensome, and they were not subject to that lord by any personal bond. This began to change in the late eleventh and twelfth centuries as lords imposed more harsh forms of control and tenants became serfs, that is, unfree peasants bound to their lord by more than the simple payment of rent."

Electronic version of a published text from 1986. (LIBRO) "The Order of Merced (or the Mercedarians) was one of the hundreds of caritative associations that sprang up in Europe during the twelfth and thirteenth centuries. These institutions consisted of hospitals, hospices, and houses of charity of various sizes and varieties. Some were operated under the aegis of communities of canons, cathedral chapters, or religious orders. Others were inaugurated by less-formally constituted bodies of laymen and laywomen or by confraternities organized by groups of town residents. Most were entirely local in their origin and purpose, but some were affiliated with larger groups, such as the Knights of St. John or the Brothers of Aubrac."

"Robert I. Burns, S.J., and Paul E. Chevedden describe how a much-besieged citadel became the focus for Christian-Muslim co-existence in medieval Spain."