1. Add MS 17661 A Reference (shelfmark): Add MS 17661 A Title: Scope & Content: Roll A. "MAPA de la Frontera de Sonora para el establecimiento de la linea de presidios," 1780 signed by Geronimo de la Rocha y Figueroa. Province of Sonora: Maps of,: 1770, 1780. Geronimo de la Rocha y Figueroa: Map of the frontier of Sonora: 1780. Collection Area: Western Manuscripts Languages: English Date Range: 1780 Extent: 1 item