This is one of the few surviving portraits of Manuel J. Cobos, included in Las Islas Encantada o el Archipielago de Colon (Bognoly and Epinoza 1905:145). It is believed to date to 1878, the same year that Cobos returned to Hacienda El Progreso from his sojourn in California in order to resume his operations at Hacienda El Progreso.