Carta náutica de Puerto Rico y las Islas Vírgenes publicada en 1850.Se titula "A Chart of Porto Rico and the Virgin Islands, &c. With Plans of the Principal Harbours and Roadsteads, Chiefly from the Spanish Surveys. By J.S. Hobbs, Hydrographer. 1850". Incluye seis recuadros con detalles de las bahías en Puerto Rico de Guánica, Mayagüez [...]