The collection includes 11 items, consisting of 55 leaves, written in various notary hands. The documents are chiefly cartas de censo enfiteusis, cartas de reconocimiento de censo enfiteusis (acknowledgement), and cartas de dexamiento de censo (termination). Also included are a carta deventa (deed of sale), and occasional cartas de poder (powers of attorney). The earliest material is dated March 18, 1463. It concerns transactions by which the Church of San Martín in Segovia, Spain, through its administrator Pedro Ximenex de Préxemo, acquired a house from Francisco Arias de Avila. This was in exchange for release of his family's perpetual tribute to the church. They then transferred the house back to the original owners, Salomon Levi and his wife Doña Luna. This contract was terminated on December 7, 1472. Later parties to the transference of the censo and property to 1645 were Alfonso Alvarez and his wife Catalina, Pedro Ruiz de Ayllón, Pedro Muñoz, Miguel Zorrilla and his wife Isabel Muñoz de Santander, Alonso Gonzlez, Alonso Julio and his wife, Doña Ana Fernández. A later reference to the censo is from 1668.
A censo enfitéutico is a special contract in which the owner of real property transfers his or her rights in the property to another person, in exchange for a specified censo (tax or tribute), to be paid as specified in the corresponding documents. Explanatory material in English is filed with the collection.