Gonzáles was a Spanish Franciscan priest at the San Diego del Pitiquito Mission, Sonora, from 1832-1839. Pérez Llera served at San Ignacio de Caburica from 1799; as Father President from 1830-1837, he presided over the disintegration of the Franciscan mission system in the Pimeria Alta; in 1841, he was back at Querétaro College as a guardian. Flores was the priest at the Nuestra Señora de la Asunción de Opodepe Mission in 1841, when he was elected Father President by the only two priests left in Sonora.
Photocopies of typed transcriptions of three letters and reports, 1839-1841, from Father Faustino Gonzáles, Father Antonio Flores, and Father José María Pérez Llera. Addressees are the Sonoran Governor Manuel María Gándara, and an unnamed Mexican Minister of War and the Navy.